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The Dell UltraSharp range has been one of the most popular ranges of displays for over 10 years now. Dell seem to update their models and add new options to the range every year or two and we've reached the time where they've decided to refresh most of their popular models. We have with us now the U2417HJ, the replacement to the very popular U2414H from 2013/14. This screen is 23.8" in size like its predecessor, with the H signifying it is 16:9 aspect ratio - offering a 1920 x 1080 resolution. Much of the design, spec and feature set remains quite similar to the older model, but we will make comparisons with the U2414H throughout the course of the review.

It's worth noting that there are actually 3 different versions of the new U2417H display, all slightly different in terms of features and extras, and with slightly differences with the underlying panel. All 3 versions technically replace the U2414H screen, but there are a few differences you should be aware of before making a decision. As well as this review of the HJ model, we will also shortly be reviewing the U2417H, which will cover the H and HA model performance.

The three slightly different versions of the U2417H are:

U2417HJ - This is the model sent to us first of all for testing and what this review is based on. It is the most similar in design to the old U2414H. It has the same video inputs as the U2414H, including DP, Mini DP and 2x HDMI. The main difference on the new U2417HJ is that it has a wireless charging function built in to the stand for Qi/PMA compliant devices. The stand is the same design we've seen from previous UltraSharp models including the previous U2414H from a couple of years ago. It has a light silver colour used for the stand and base, and an elongated cable tidy hole in the back. The only difference with the stand is the integrated wireless charging point and small LED charging light (see later pictures in this review).

The screens bezel dimensions and appearance are very similar to the old U2414H. The back of the screen is a matte black colour entirely like the U2414H was. There are 4 USB 3.0 ports on this model, 3 on the underside with the other connections, and one on the back (visible in the lower right area above) which also has charging capabilities, again the same as the U2414H. Even the OSD menu is identical and has not been updated with any new options. Dell have forgotten to update the model name in the OSD software so it still reads 'U2414H' in fact. The underlying panel has been changed though compared with the old U2414H, moving from an LG.Display IPS panel to a Samsung PLS equivalent. So the main changes from the U2414H are the different underlying panel, and the charging function built in to the stand.

U2417H - the "normal" U2417H is more different to the old U2414H. It has a four-side zero-bezel design, minimising the size of the lower bezel from the U2414H and U2417HJ models. It has a two colour toned back as shown in the pictures here (silver and black). The front of the stand and the base is also a darker silver colour like we had seen on the Dell S2716DG recently, with a circular cable tidy hole in the back as shown above. There are 2x USB 3.0 ports located on the left hand edge of the screen at the bottom too (not on the HJ) for easy access, although there are still only 4 in total.

This H model is missing one HDMI connection and the wireless charging function compared with the HJ. It does have an updated OSD software though, including an additional response time setting in the OSD menu. The HJ model doesn't have a response time setting in the OSD menu although we've seen in the past that actually the 'normal' setting tends to be optimal anyway on models with an additional 'fast' option, so this extra setting probably isn't even missed on the HJ model. The underlying panel is slightly different to the HJ model. Again Dell have moved away from an LG.Display IPS panel from the U2414H and to a Samsung PLS equivalent. It is a different revision in the H model (LTM238HL04) compared with the HJ (LTM238HL01). We will review the H model separately and make comparisons of the performance between that and the U2414H / U2417HJ displays.


U2417HA - this model is basically the same as the U2417H, with the same underlying panel, four side zero-frame design, two coloured back, 2x USB ports on the left hand edge, additional response time setting in the OSD menu and one less HDMI connection than the U2417HJ model. The difference between this and the normal U2417H is that rather than a monitor stand, it is provided with a mounting arm as shown in the above pictures.

Dell U2417HJ Now Available

Specifications and Features

The following table gives detailed information about the specs of the screen:

Monitor Specifications


23.8"WS (60.47 cm)

Panel Coating

Light AG coating

Aspect Ratio



1x DisplayPort (version 1.2a), 1x Mini DP, 2x HDMI (MHL), 1x DisplayPort out


1920 x 1080

Pixel Pitch

0.2745 mm

Design colour

Matte black bezel with silver stand and base

Response Time

8ms G2G


Tilt, height, swivel and rotate

Static Contrast Ratio


Dynamic Contrast Ratio

2 million:1

VESA Compatible

Yes 100mm


250 cd/m2


Power cable, DisplayPort > Mini DP cable, USB cable, charging power cable

Viewing Angles

178 / 178

Panel Technology

Samsung PLS (IPS-type)


panel only: 3.56 Kg

Backlight Technology


Physical Dimensions

539.1 x 415.2 - 505.2 x 201.0 mm

Colour Depth


Refresh Rate


Special Features

4x USB 3.0 ports, wireless device charging stand (Qi/PMA compliant), Factory calibration and report, 1x audio output

Colour Gamut

Standard gamut
96% sRGB, ~72% NTSC

The U2417HJ offers a very good range of connectivity options with DisplayPort, Mini DisplayPort and 2x HDMI (MHL supported) connections offered. There is also a DisplayPort output for Daisy Chaining support. The digital interfaces are HDCP certified for encrypted content and the video cables are provided in the box for DisplayPort > Mini DP only. It's worth noting that the normal U2417H and U2417HA models offer the same video connections, minus one of the HDMI inputs.

The screen has an internal power supply and comes packaged with the power cable you need. There are also 3x USB 3.0 ports located on the underside of the screen with the video connections and 1x port on the back of the screen, which also has charging capabilities. On the normal U2417H and U2417HA models there are 2x USB ports on the underside, and 2x on the left hand edge of the screen instead.

Below is a summary of the features and connections of the screen:


Yes / No


Yes / No

Tilt adjust


Height adjust


Swivel adjust


Rotate adjust


VESA compliant


USB 2.0 Ports

Audio connection

USB 3.0 Ports

HDCP Support

Card Reader

MHL Support

Ambient Light Sensor

Integrated Speakers

Human Motion Sensor

PiP / PbP

Touch Screen

Blur Reduction Mode

Factory Calibration


Hardware calibration


Uniformity correction

Wireless charging

Design and Ergonomics

Above: front view of the screen

The U2417HJ is part of Dell's 'zero frame' designed UltraSharp range. There is a thin bezel around all the edges giving it a sleek and sharp design, ideal also for multi-screen set ups. Around the sides and top of the screen is a very thin 1.5mm plastic edge, and then a 4mm inner panel border before the image starts (total of 5.5mm black edges around the sides and top). Along the bottom edge of the screen is a matte black bezel measuring ~15mm. There is a shiny silver Dell logo in the middle of this bottom bezel, and in the right hand corner are the touch sensitive OSD control buttons and power button. It should be noted that the design is very similar to the U2414H which was also a zero-frame screen. The U2417H and U2417HA models move to an even smaller four-side zero-frame design as well, minimising the lower bezel as well.

Above: front and back views. Click for larger versions

The stand and base are finished in a light silver colour as shown, while the back of the screen is a matte black plastic enclosure. There is a cable tidy hole in the back of the stand as you can see from the above images. Front and back, it looks pretty much identical to the old U2414H incidentally.

Above: the wireless charging feature built in to the stand

The HJ model features an integrated wireless charging point in the base as indicated above and talked about in more detail in the introduction section of this review. We liked this as a feature and no doubt this will become increasingly useful in the coming years as more and more phones switch to this technology. A cool new feature we would like to see more often.

Above: full tilt range shown. Click for larger versions

The screen offers a full range of ergonomic adjustments. Tilt is smooth to move but a little stiff. It offers a good adjustment range as shown above.

Above: full height adjustment range shown. Click for larger versions

Height adjustment is also available with smooth movement which is a little easier to re-position than tilt. At the lowest setting the bottom edge of the screen is ~95mm from the top of the desk, and at maximum extension it is ~180mm. This gives a total adjustment range of ~85mm which is fairly modest but adequate.

Side to side swivel is smooth but fairly stiff, sometimes resulting in the whole screen and base moving instead of just the screen shifting side to side and the base remaining stationary. Rotation is also offered but is stiff to use, although at least fairly useable on a screen this size. Overall the screen remained stable on the desk with no wobbling.

A summary of the screens ergonomic adjustments is shown below:




Ease of Use




A little stiff








Moderately stiff



Quite Smooth



Good range of adjustments and easy enough to use overall.

The materials were of a good standard and the build quality felt good as well. There was no audible noise from the screen, even when conducting specific tests which can often identify buzzing issues. The whole screen remained cool even during prolonged use as well which was pleasing.

Above: interface connections. Click for larger version

The back of the screen features the interface connections as shown above. There are (from left to right) the power connection, DisplayPort in, Mini DisplayPort, DisplayPort out, 2x HDMI (MHL), audio out, USB upstream and 3x USB downstream. To the right you can also see the additional USB port (with charging capabilities) in the back of the screen for easier access. It's not as easy as when they are located on the side of the screen like they are on the U2417H and U2417HA models, but still a bit easier to get to than those underneath. The lack of DVI or VGA connections may be limiting for some older systems, but most modern devices and graphics cards should be offering HDMI or DisplayPort nowadays.

OSD Menu

Above: OSD control buttons on the bottom right hand corner. Click for larger version

The OSD menu is controlled from a series of 4 touch-sensitive buttons on the lower right hand edge of the front bezel. There are 4 small grey circles on the front bezel to mark where the controls are. There is also a touch-sensitive power button which has a small rectangular LED beneath it which glows white during operation and pulsates on and off (white) during standby.

Pressing any of the four buttons pops up a quick access menu as shown above. There are quick access options to get to the preset modes and the brightness/contrast controls by default. Note that we've actually changed the preset quick launch in the photo above to instead offer access to the input selection. These can be customised within the main OSD menu if you would prefer quick access to other settings as well.


As an example of what the quick launch option looks like when selected, the brightness and contrast quick access menu is shown above.

The main OSD menu is split into 8 sections down the left hand side as shown above. We spotted an error on Dell's part here, as the model name says U2414H here at the top left, even though it is the updated U2417HJ model! On the U2417HJ at least, they've used the exact same OSD software and forgotten to update the model name at the top. We have confirmed that Dell will have updated the software properly on the U2417H / HA versions though. Anyway, because of this error we can shamelessly use the images from the previous U2414H review as nothing has changed!

In the top right hand corner is Dell's "energy use" bar which gives you an idea of your power consumption. You can scroll down the left hand menu sections and the options available within each section are then shown on the right.

The input source section allows you to switch between the video inputs as shown above.

The 'color settings' section allows you to access the preset modes and make a few other alterations relating to colour control. The preset mode options are shown above as well for reference.

The 'Display settings' section allows you to control a few advanced features. There is access to the hardware aspect ratio control settings (16:9, 4:3 and 5:4 modes available) and the Dynamic Contrast Ratio as well, if you're in a suitable preset where it is available.

The other sections shown above are pretty self explanatory. All in all the menu was fast and easy to use. Navigation felt simple and intuitive and the touch-sensitive controls worked well. No complaints here.


Power Consumption

In terms of power consumption the manufacturer lists typical usage of 16.0W and <0.5W in standby mode. We carried out our normal tests to establish its power consumption ourselves.

State and Brightness Setting

Manufacturer Spec (W)

Measured Power Usage (W)

Default (75%)



Calibrated (30%)



Maximum Brightness (100%)



Minimum Brightness (0%)






We tested this ourselves and found that out of the box the screen used 20.4W at the default 75% brightness setting. At 100% brightness this increased a little to 22.0W. Additional power draw in the spec is related to having USB and SoundBar devices connected. Once calibrated the screen reached 13.0W consumption, and in standby it used only 1.1W. We have plotted these results below compared with other screens we have tested. The consumption is comparable actually to the previous U2414H model as you might expect and a little less than the bigger sized screens and those with wide gamut LED backlights like the Dell U2413 and U2713H.

Panel and Backlighting

Panel Manufacturer


Colour Palette

16.7 million

Panel Technology

PLS (IPS-type)

Colour Depth

6-bit+ FRC

Panel Module


Colour space

Standard gamut

Backlighting Type


Colour space coverage (%)

96% sRGB, ~72% NTSC

Panel Part and Colour Depth

The Dell U2417HJ features a Samsung LTM238HL01 PLS (IPS-type) technology panel which is capable of producing 16.7 million colours. This is achieved through a 6-bit+FRC colour depth as with most modern IPS-type panels of this size range. It should be noted that this is a move away from LG.Display for Dell as the old U2414H model featured an LG.Display IPS panel instead. They've moved this time to a Samsung PLS (IPS-type) panel with borderless design. Note that the panel is slightly different in the U2417H / HA models as it's the LTM238HL04 panel from Samsung. See the U2417H review for testing of that version.

A note about PLS technology. This is Samsung's answer to LG.Display's very popular, and long-established IPS (In Plane Switching) technology. Testing of this technology has revealed that it is for all intents and purposes the same as IPS. Performance characteristics, features and specs are all pretty much identical. Samsung weren't allowed to simply call their technology IPS due to trademark issues, which is why they adopted their own new name of PLS. AU Optronics are the same with their AHVA panel tech, which is another IPS-clone. You will see pretty much all monitor manufacturers now simply use the term IPS, since it is so well known in the market, but underneath they may be using an IPS version from LG.Display, AU Optronics or Samsung potentially. People should not get concerned with the semantics here, which is why we will continually refer to this as an "IPS-type" panel throughout the review.

The panel part is confirmed when accessing the service menu as shown below.

Screen Coating

The screen coating is a light anti-glare (AG) offering. It isn't a semi-glossy coating, but it is light as seen on other modern IPS type panels. Thankfully it isn't a heavily grainy coating like some old IPS panels feature and is also lighter than modern TN Film panel coating. It retains its anti-glare properties to avoid too many unwanted reflections of a full glossy coating, but does not produce an too grainy or dirty an image that some thicker AG coatings can. No cross-hatching patterns were visible on the coating at all. The coating remains unchanged compared with the old U2414H model.

Backlight Type and Colour Gamut

The screen uses a White-LED (W-LED) backlight unit which is standard in today's market. This helps reduce power consumption compared with older CCFL backlight units and brings about some environmental benefits as well. The W-LED unit offers a standard colour gamut which is approximately equal to the sRGB colour space. Dell quote 96% coverage in their spec. Anyone wanting to work with wider colour spaces would need to consider wide gamut CCFL screens or the newer range of GB-r-LED type (and similar) displays available now. If you want to read more about colour spaces and gamut then please have a read of our detailed article.

Backlight Dimming and Flicker

We tested the screen to establish the methods used to control backlight dimming. Our in depth article talks in more details about a common method used for this which is called Pulse Width Modulation (PWM). This in itself gives cause for concern to some users who have experienced eye strain, headaches and other symptoms as a result of the flickering backlight caused by this technology. We use a photosensor + oscilloscope system to measure backlight dimming control with a high level of accuracy and ease. These tests allow us to establish

1) Whether PWM is being used to control the backlight
2) The frequency and other characteristics at which this operates, if it is used
3) Whether a flicker may be introduced or potentially noticeable at certain settings

If PWM is used for backlight dimming, the higher the frequency, the less likely you are to see artefacts and flicker. The duty cycle (the time for which the backlight is on) is also important and the shorter the duty cycle, the more potential there is that you may see flicker. The other factor which can influence flicker is the amplitude of the PWM, measuring the difference in brightness output between the 'on' and 'off' states. Please remember that not every user would notice a flicker from a backlight using PWM, but it is something to be wary of. It is also a hard thing to quantify as it is very subjective when talking about whether a user may or may not experience the side effects.

100%                                                  50%                                                  0%

Above scale = 1 horizontal grid = 5ms

At 100% brightness a constant voltage is applied to the backlight. As you reduce the brightness setting to dim the backlight a Direct Current (DC) method is used, as opposed to any form of PWM. This applies to all brightness settings from 100% down to 0%. The screen is flicker free as a result which is excellent news (as was the U2414H before it).

Pulse Width Modulation Used


Cycling Frequency


Possible Flicker at


100% Brightness


50% Brightness


0% Brightness


For an up to date list of all flicker-free (PWM free) monitors please see our Flicker Free Monitor Database.


Contrast Stability and Brightness

We wanted to see how much variance there was in the screens contrast as we adjusted the monitor setting for brightness. In theory, brightness and contrast are two independent parameters, and good contrast is a requirement regardless of the brightness adjustment. Unfortunately, such is not always the case in practice. We recorded the screens luminance and black depth at various OSD brightness settings, and calculated the contrast ratio from there. Graphics card settings were left at default with no ICC profile or calibration active. Tests were made using an X-rite i1 Display Pro colorimeter. It should be noted that we used the BasICColor calibration software here to record these, and so luminance at default settings may vary a little from the LaCie Blue Eye Pro report.

OSD Brightness


Black Point (cd/m2)

Contrast Ratio
( x:1)














































Total Luminance Adjustment Range (cd/m2)


Brightness OSD setting controls backlight?

Total Black Point Adjustment Range (cd/m2)


Average Static Contrast Ratio


PWM Free? 

Recommended OSD setting for 120 cd/m2


We conducted these tests in the default 'standard' preset mode. The brightness control gave us a very good range of adjustment. At the top end the maximum luminance reached 240 cd/m2 which was only a tad lower than the specified maximum brightness of 250 cd/m2 from the manufacturer. There was a decent 210 cd/m2 adjustment range in total, and so at the minimum setting you could reach down to a low luminance of 30 cd/m2. This should be more than adequate for those wanting to work in darkened room conditions with low ambient light. A setting of 57 in the OSD menu should return you a luminance of around 120 cd/m2 at default settings in this preset mode (standard). It should be noted that the brightness regulation is controlled without the need for Pulse Width Modulation, using a Direct Current (DC) method for all brightness settings between 100 and 0% and so the screen is flicker free.

We have plotted the luminance trend on the graph above. The screen behaves as it should in this regard, with a reduction in the luminance output of the screen controlled by the reduction in the OSD brightness setting. This is not linear relationship as you can see, with the adjustments between 100 and 70 controlling a slightly steeper luminance range.

The average contrast ratio of the screen was excellent for an IPS panel at 1126:1. This was fairly stable across the brightness adjustment range as shown above with some fluctuation at the lower brightness adjustment end below 50%.

Testing Methodology

An important thing to consider for most users is how a screen will perform out of the box and with some basic manual adjustments. Since most users won't have access to hardware colorimeter tools, it is important to understand how the screen is going to perform in terms of colour accuracy for the average user.

We restored our graphics card to default settings and disabled any previously active ICC profiles and gamma corrections. The screen was tested at default factory settings using our new X-rite i1 Pro 2 Spectrophotometer combined with LaCie's Blue Eye Pro software suite. An X-rite i1 Display Pro colorimeter was also used to verify the black point and contrast ratio since the i1 Pro 2 spectrophotometer is less reliable at the darker end.

Targets for these tests are as follows:

  • CIE Diagram - validates the colour space covered by the monitors backlighting in a 2D view, with the black triangle representing the displays gamut, and other reference colour spaces shown for comparison

  • Gamma - we aim for 2.2 which is the default for computer monitors

  • Colour temperature / white point - we aim for 6500k which is the temperature of daylight

  • Luminance - we aim for 120 cd/m2, which is the recommended luminance for LCD monitors in normal lighting conditions

  • Black depth - we aim for as low as possible to maximise shadow detail and to offer us the best contrast ratio

  • Contrast ratio - we aim for as high as possible. Any dynamic contrast ratio controls are turned off here if present

  • dE average / maximum - as low as possible. If DeltaE >3, the color displayed is significantly different from the theoretical one, meaning that the difference will be perceptible to the viewer. If DeltaE <2, LaCie considers the calibration a success; there remains a slight difference, but it is barely undetectable. If DeltaE < 1, the color fidelity is excellent.

A word of warning before we start. Oddly we found that the U2417HJ seemed to make our NVIDIA graphics card default back to a limited RGB range when it was initially connected. The screen didn't quite look right, showing particularly weak blacks and contrast ratio, which is a dead giveaway that it had switched to a limited RGB setting. That is sometimes the case when connecting via HDMI, where the graphics card thinks you are connecting an LCD TV instead, which typically operates in that limited range. We had connected here using DisplayPort > Mini DP though. It's very easy to change, but we would just recommend double checking your graphics card settings when you first connect the screen to make sure it hasn't changed to limited RGB range.

Default Performance and Setup

Default settings of the screen were as follows:

Monitor OSD Option

Default Settings

Preset Picture Mode








Dell U2417HJ - Default Settings, Standard mode



Default Settings

luminance (cd/m2)


Black Point (cd/m2)


Contrast Ratio



Initially out of the box the screen was set in the default standard preset mode. Despite the high 75% brightness setting out of the box the screen didn't look overly bright which is quite unusual, and you don't need to lower it much to get a comfortable setting for every day use. You could tell the screen was using a standard gamut backlight as well with the naked eye, and the image felt a little warm.


We went ahead and measured the default state with the i1 Pro. The CIE diagram on the left of the image confirms that the monitors colour gamut (black triangle) is fairly equal to the sRGB colour space. There is some minor over-coverage in green and blue shades but not by anything significant.


Default gamma was recorded at 2.2 average, leaving it with a 0% deviance from the target which was excellent news. Given there is no gamma control (other than switching between PC and Mac modes) in the OSD menu, this is pleasing as it would have been hard to correct otherwise without a calibration device. White point was measured at a slightly warm 5994k, being 8% out from the 6500k we'd ideally want for desktop use. The factory calibrated sRGB preset mode (see the following section) is deliberately set at 6000k it seems, so perhaps that has carried over to this default 'standard' mode as well.


Luminance was recorded at a moderate 166 cd/m2 which is a little too high for prolonged general use but not overly bright. The screen was set at a default 75% brightness in the OSD menu but that is easy to change of course to reach a more comfortable setting without impacting any other aspect of the setup. The black depth was 0.145 cd/m2 at this default brightness setting, giving us an excellent (for an IPS-type panel) static contrast ratio of 1141:1. Colour accuracy was also excellent out of the box with an average dE of only 1.6, maximum of 3.6. Testing the screen with colour gradients showed smooth transitions in all shades, with only very minor gradation evident in darker tones. Overall this default setup was very good and we were pleased with the results.



We also wanted to test the screen out of the box in the 'custom color' preset mode. This looked visibly different to the standard preset, and would also allow us access to the RGB controls in the menu for calibration later on.

Monitor OSD Option


Preset Picture Mode

Custom Color






100, 100, 100

Dell U2417HJ - Default Settings, Custom Color mode


Default Settings,
Custom Color mode

luminance (cd/m2)


Black Point (cd/m2)


Contrast Ratio



This preset mode showed a different setup to the standard mode. Gamma remained nice and accurate at 2.2 average, but white point was now a little cooler (noticeable to the naked eye) at 6778k. The RGB channels were defaulted to 100 each, and so this also resulted in a brighter screen (244 cd/m2), despite the same 75% brightness setting, and also a stronger contrast ratio of 1229:1. Colour accuracy remained excellent. This mode is perhaps a better starting point for most users, being a little nearer to the 6500k white point target and also easy to adjust further through OSD controls. In fact, if you use the RGB settings from our calibration section you should be able to bring that white point even closer to 6500k and provide a very good setup without the need for further calibration equipment.


Factory Calibration

There is also a factory calibrated sRGB preset mode on this screen. In the box there is a calibration report provided which is unique to your particular unit. This shows that the sRGB preset mode has been factory calibrated to offer a dE of <4 and tighter grey scale tracking. If you look at the grey scale tracking graph you can tell that the screen has been calibrated to 6000k, and not 6500k for some reason.

The report provided with our test sample is shown below:

Monitor OSD Option

Default Settings

Preset Picture Mode








Dell U2417HJ - Factory Calibration, sRGB mode


Factory calibrated
sRGB mode

luminance (cd/m2)


Black Point (cd/m2)


Contrast Ratio



The factory calibrated sRGB mode offers a decent setup as well. The 2.2 gamma target is nicely met, with only a small 1% deviance. White point is "correct" in that it is calibrated to the target of 6000k nicely, although we would have rather it had been calibrated to 6500k personally. Colour accuracy is within targets nicely, with dE of 2.0 average. The only slightly weaker area is the contrast ratio at 940:1 which is still strong for an IPS-type panel. This mode doesn't offer much different to the default 'standard' preset mode, other than a slightly brighter picture. With the lack of control in the OSD menu to adjust the RGB values and change the white point we would probably find the 'custom color' mode is a better starting point and easier to adjust to your needs.





We used the X-rite i1 Pro 2 Spectrophotometer combined with the LaCie Blue Eye Pro software package to achieve these results and reports. An X-rite i1 Display Pro colorimeter was used to validate the black depth and contrast ratios due to lower end limitations of the i1 Pro device.


Monitor OSD Option

Calibrated Settings

Preset Picture Mode

Custom Color






99, 100, 95

Dell U2417HJ - Calibrated Settings



Calibrated Settings

luminance (cd/m2)


Black Point (cd/m2)


Contrast Ratio



We changed to the 'custom color' preset mode which had delivered the optimal starting point for our calibration, and offered us access to the RGB controls from within the menu. We adjusted the RGB channels and brightness setting as shown in the table above. All these OSD changes allowed us to obtain an optimum hardware starting point and setup before software level changes would be made at the graphics card level. We left the  LaCie software to calibrate to "max" brightness which would just retain the luminance of whatever brightness we'd set the screen to, and would not in any way try and alter the luminance at the graphics card level, which can reduce contrast ratio. These adjustments before profiling the screen would help preserve tonal values and limit banding issues. After this we let the software carry out the LUT adjustments and create an ICC profile.


Average gamma was now corrected to 2.2 average with a 0% deviance, correcting the minor 1% deviance we'd seen out of the box in this preset mode. The white point had now been corrected nicely to 6518k, bringing it in line with the target and correcting the small 4% deviance we'd seen by default where it was a little too cool. Luminance had been improved thanks to the adjustment to the brightness control and was now being measured at 119 cd/m2. This left us a black depth of 0.097 cd/m2 and gave us an excellent static contrast ratio (for an IPS-type panel) of 1228:1. Colour accuracy of the resulting profile was excellent, with dE average of 0.4 and maximum of 1.3. LaCie would consider colour fidelity to be very good overall. Testing the screen with various colour gradients showed smooth transitions. There was some very slight gradation in darker tones but no banding introduced due to the adjustments to the graphics card LUT from the profilation of the screen which was pleasing. You can use our settings and try our calibrated ICC profile if you wish, which are available in our ICC profile database. Keep in mind that results will vary from one screen to another and from one computer / graphics card to another.





Calibration Performance Comparisons


The comparisons made in this section try to give you a better view of how each screen performs, particularly out of the box which is what is going to matter to most consumers. When comparing the default factory settings for each monitor it is important to take into account several measurement areas - gamma, white point and colour accuracy. There's no point having a low dE colour accuracy figure if the gamma curve is way off for instance. A good factory calibration requires all 3 to be well set up. We have deliberately not included luminance in this comparison since this is normally far too high by default on every screen. However, that is very easily controlled through the brightness setting (on most screens) and should not impact the other areas being measured anyway. It is easy enough to obtain a suitable luminance for your working conditions and individual preferences, but a reliable factory setup in gamma, white point and colour accuracy is important and not as easy to change accurately without a calibration tool.


From these comparisons we can also compare the calibrated colour accuracy, black depth and contrast ratio. After a calibration the gamma, white point and luminance should all be at their desired targets.



Default setup of the screen out of the box was very good with an accurate gamma of 2.2, low dE of 1.6 and a high contrast ratio. The white point was the only area really that was skewed from our target, being measured at 5994k which was "accurate" in the sense that Dell have deliberately factory calibrated to that white point, but a little out from our review target of 6500k. Thankfully it's very easy to adjust with some basic OSD changes. It's worth comparing the U2417HJ with the previous U2414H model. The U2417HJ offers some decent improvements over the old model, which showed a 5% gamma deviance (5% out), slightly higher dE average (2.3) and weaker contrast ratio than the newer model. That old U2414H was closer to the desired 6500k white point out of the box, but the U2417HJ's setup was better overall.




The display was excellent when it came to contrast ratio for an IPS-type panel. It offered a very impressive 1228:1 calibrated contrast ratio, significantly surpassing the previous U2414H model which reached 970:1. It was actually the highest calibrated contrast ratio we have seen from any IPS-type panel, going beyond our previous champion, the Dell U2515H at 1138:1. Of course it can't compete with VA panel types which can reach over 2000:1 easily, and commonly up to 3000:1, even close to 5000:1 in the case of the Eizo FG2421. These VA panels are not shown in the graph above.


Viewing Angles

Above: Viewing angles shown from front and side, and  from above and below. Click for larger image

Viewing angles of the screen were a little worse than we had expected. We've grown to expect very similar performance from all IPS-type panels in this regard, whether they are manufactured by LG.Display, Samsung, AU Optronics or anyone else really. In the case of the Samsung panel used here, the viewing angles were a little more restrictive than other IPS offerings. Horizontally they were fairly comparable with other IPS panels, although there was a slightly more apparent contrast shift from some positions. Vertically however there was a more restrictive view than we are used to, where the image went noticeably blue and darker. You can see this in the photos above and if you compare it to the old U2414H (with LG.Display IPS panel) you can see the differences.

The viewing angles were still superior to those from VA panels and TN Film panels of course, but we were a little disappointed they seemed to have taken a bit of a step back here.

Above: View of an all black screen from the side. Click for larger version

On a black image there is a moderate pale glow introduced to the image when viewed from a wide angle, commonly referred to as IPS glow. This is perhaps slightly less than we've seen from some IPS panels like the 24" Dell U2415 for instance. It's not a low-glow panel like the previous U2414H was, where that showed very little IPS glow at all.

Dell U2417HJ Now Available

Panel Uniformity

We wanted to test here how uniform the brightness was across the screen, as well as identify any leakage from the backlight in dark lighting conditions. Measurements of the luminance were taken at 35 points across the panel on a pure white background. The measurements for luminance were taken using BasICColor's calibration software package, combined with an X-rite i1 Display Pro colorimeter with a central point on the screen calibrated to 120 cd/m2. The below uniformity diagram shows the difference, as a percentage, between the measurement recorded at each point on the screen, as compared with the central reference point.

It is worth noting that panel uniformity can vary from one screen to another, and can depend on manufacturing lines, screen transport and other local factors. This is only a guide of the uniformity of the sample screen we have for review.

Uniformity of Luminance

The luminance uniformity of the screen was moderate but not great. There was a drop in luminance as you moved towards the top and bottom of the screen, where it ranged down from the centrally calibrated 120 cd/m2 to 94 cd/m2 in the most extreme example. Only around 37% of the screen remained within a 10% deviance from the central area which was a bit of a shame.

Backlight Leakage

Above: All black screen in a darkened room. Click for larger version

We also tested the screen with an all black image and in a darkened room. A camera was used to capture the result. The camera showed there was some clouding detected from the bottom two corners with some minor backlight bleed evident. It was not possible to see this during normal every day uses.

Note: if you want to test your own screen for backlight bleed and uniformity problems at any point you need to ensure you have suitable testing conditions. Set the monitor to a sensible day to day brightness level, preferably as close to 120 cd/m2 as you can get it (our tests are once the screen is calibrated to this luminance). Don't just take a photo at the default brightness which is almost always far too high and not a realistic usage condition. You need to take the photo from about 1.5 - 2m back to avoid capturing viewing angle characteristics, especially on IPS-type panels where off-angle glow can come in to play easily. Photos should be taken in a darkened room at a shutter speed which captures what you see reliably and doesn't over-expose the image. A shutter speed of 1/8 second will probably be suitable for this.


General and Office Applications

With a 1920 x 1080 resolution, the desktop real estate  of the U2417HJ feels a step down compared with all the high resolution panels we've tested, and the 27" 2560 x 1440 models we are used to using day to day. You do lose a large amount of desktop space, and although side by side split screen working is possible, it's not as easy due to the more limited resolution and space. With a 0.2745mm pixel pitch, text is comfortable and easy to read natively, providing a sharp and crisp image. It is not as sharp as the 1440p panels we've become accustomed to, or of course any ultra HD/4K resolutions where scaling is used, but it is perfectly adequate. For this size screen, 1920 x 1080 is about your limit of sensible resolution without needing to use operating system scaling options.

The very thin bezel design mean that the U2417HJ could be easily integrated into a multi-screen set up if you wanted. The light AG coating of the panel is welcome, and much better than the grainy and 'dirty' appearance of older IPS AG coatings. The wide viewing angles provided by this panel technology on both horizontal and vertical planes, helps minimize on-screen colour shift when viewed from different angles although they weren't quite as wide as we were used to from other IPS-type offerings. The default setup of the screen was very good as well, offering an accurate gamma curve, decent contrast ratio and low dE. The white point had been set to 6000k in the factory calibrated and standard modes, but easy to adjust if you need to via the custom color preset.

The brightness range of the screen was also very good, with the ability to offer a luminance between 240 and 30 cd/m2. This should mean the screen is perfectly useable in a wide variety of ambient light conditions, including darkened rooms. A setting of ~57 in the OSD brightness control should return you a luminance close to 120 cd/m2 out of the box if you stick to the 'standard' preset mode. Otherwise you might want to try the settings from our calibration section. On another positive note, the brightness regulation is controlled without the need for the use of the now infamous Pulse-Width Modulation (PWM), and so those who suffer from eye fatigue or headaches associated with flickering backlights need not worry. We don't know why Dell don't start promoting this as a feature really, as it's a big pro. There was no audible noise or buzzing from the screen, even when specifically looking for it using test images with a large amount of text at once. The screen also remains cool even during prolonged use.

There are a few extras provided here as well including a 4 port USB 3.0 hub (1x easy access with charging support on the back), an audio output for speaker connection and on the HJ model, the wireless charging function in the stand. That was a nice new feature we thought. There were no further extras such as ambient light sensors or card readers on this model which can be useful in office environments. There was a good range of ergonomic adjustments available from the stand allowing you to obtain a comfortable position for a wide variety of angles. The VESA mounting support may also be useful to some people as well.

Above: photo of text at 1920 x 1080 (top) and 1600 x 900 (bottom)

The screen is designed to run at its native resolution of 1920 x 1080 and at a 60Hz recommended refresh rate. However, if you want you are able to run the screen outside of this resolution. We tested the screen at a lower 1600 x 900 resolution to see how the screen handles the interpolation of the resolution, while maintaining the same aspect ratio of 16:9. At native resolution the text was sharp and clear. When running at a the lower  resolution the text is still reasonably clear, with moderate levels of blurring. You do lose a lot of screen real-estate as well of course but the image seems to be interpolated quite well from lower resolution sources.


Responsiveness and Gaming

Quoted G2G Response Time

8ms G2G

Quoted ISO Response Time


Panel Manufacturer and Technology

Samsung PLS (IPS-type)

Panel Part


Overdrive Used


Overdrive Control Available to User


Overdrive Settings


The U2417HJ is rated by Dell as having an 8ms G2G response time, which indicates the panel uses overdrive / response time compensation (RTC) technology to boost pixel transitions across grey to grey changes. On this version of the model there is no user control over the overdrive impulse within the OSD menu at all. On the normal U2417H and the U2417HA models there is an additional 'response time' setting available which allows you to switch from the 'normal' 8ms G2G mode, to a 'fast' 6ms G2G mode. In fact we've found this setting on other Dell screens to not really offer anything practically useful and would expect the 'normal' mode to be optimal anyway. If you refer to our following tests you will see that actually the overdrive impulse seems to be about as aggressive as it can be before too much overshoot is introduced, and so we wouldn't really want to push it any further anyway. The additional overdrive control is not therefore missed here.

The part being used is the Samsung LTM238HL01 PLS (IPS-type) panel. Have a read about response time in our specs section if you need additional information about this measurement.

We will first test the screen using our thorough response time testing method. This uses an oscilloscope and photosensor to measure the pixel response times across a series of different transitions, in the full range from 0 (black) to 255 (white). This will give us a realistic view of how the monitor performs in real life, as opposed to being reliant only on a manufacturers spec. We can work out the response times for changing between many different shades, calculate the maximum, minimum and average grey to grey (G2G) response times, and provide an evaluation of any overshoot present on the monitor.

We use an ETC M526 oscilloscope for these measurements along with a custom photosensor device. Have a read of our response time measurement article for a full explanation of the testing methodology and reported data.

The average G2G response time was measured at 8.7ms which was very good overall for a 60Hz IPS-type panel. Rise times (changes from dark to light shades) were slightly slower than fall times (changes from light to dark shades) but not by anything significant. Some measurements reached below the 8ms advertised figure as well.

If we evaluate the Response Time Compensation (RTC) overshoot then the results are pleasing and there is very little to be seen. A couple of the measured transitions showed a fairly high overshoot, mostly when changing between two very similar shades, more so if that transitions was getting slightly darker. The 9.7 - 11.1% overshoot was apparent, but really only affected a couple of the transitions. Quite a few other transitions had a very slight overshoot between 3 and 6%, but that is so slight that you shouldn't see any problems with that in practice. Overall this was a pleasing result from the U2417HJ. Given there are some low levels of overshoot starting to creep in, we do know that the panel is probably being pushed about as much as it can by the overdrive circuit before high levels start to become evident. With that in mind, we don't miss the additional 'response time' control from the OSD menu which would allow you to push the overdrive impulse more, and almost certainly lead to much more apparent overshoot problems.


The above comparison table and graph shows you the lowest, average and highest G2G response time measurement for each screen we have tested with our oscilloscope system. There is also a colour coded mark next to each screen in the table to indicate the RTC overshoot error, as the response time figure alone doesn't tell the whole story.

The response time performance of the U2417HJ is on par with the best 60Hz IPS-type panels we've tested. With an average G2G response time of 8.7ms it offers decent pixel transition times, while remaining free from most overshoot. There are some low levels of overshoot introduced in some cases, slightly more so than the U2414H and U2415 but still nothing to worry about. High refresh rate IPS-type panels like the Asus ROG Swift PG279Q and Acer XB270HU for instance can reach lower response times of around 5 ms G2G thanks to the boosted refresh rate. For a 60Hz IPS-type panel, we don't have any complaints here from the U2417HJ.


The screen was also tested using the chase test in PixPerAn for the following display comparisons. As a reminder, a series of pictures are taken on the highest shutter speed and compared, with the best case example shown on the left, and worst case example on the right. This should only be used as a rough guide to comparative responsiveness but is handy for a comparison between different screens and technologies as well as a means to compare those screens we tested before the introduction of our oscilloscope method.

23.8" 8ms G2G Samsung PLS (IPS-type) @ 60Hz

In practice the Dell U2417HJ showed low levels of blurring on moving images and no noticeable overshoot. It was the same as we had seen from other decent 60Hz IPS-type panels in the past in these tests. It didn't have the motion clarity of high refresh rate panels, which offer improvements thanks to reduced response times and the increased frame rate.

23.8" 8ms G2G Samsung PLS (IPS-type) @ 60Hz

23.8" 8ms G2G LG.Display AH-IPS

24" 8ms G2G LG.Display AH-IPS (Response Time = Normal)

25" 8ms G2G LG.Display AH-IPS (Response Time = Normal)

27" 8ms G2G LG.Display AH-IPS (Response Time = Normal)

If we compare the U2417HJ with a range of other recent UltraSharp screens you will see that the motion performance is very similar between all 5 models. There's very little to separate them all in practice, although the U2515H and U2715H are perhaps ever so slightly slower with a little more pronounced blur. Again, the U2417HJ is on par with its predecessor, the U2414H which is good news.

Additional Gaming Features

Aspect Ratio Control - Like the U2414H, U2515H and U2715H models, the new U2417HJ has 3 options for aspect ratio control through the OSD 'Display' menu as shown above. There are options for wide 16:9, 5:4 and 4:3 only. There is no 1:1 pixel mapping mode specifically but given a lot of content from external devices is 16:9 aspect ratio by default, the native aspect of the screen can at least accommodate that nicely. You will have to put up with the screen interpolating content up to the full size of the screen when using an external device, as you can't use any kind of 1:1 scaling option on this model.

Preset Modes - There is a specific 'game' available in the OSD which appears to make the image a tad cooler than our calibrated custom mode. It gives you access to the dynamic contrast ratio control if you want to use it as well.


We have written an in depth article about input lag and the various measurement techniques which are used to evaluate this aspect of a display. It's important to first of all understand the different methods available and also what this lag means to you as an end-user.

Input Lag vs. Display Lag vs. Signal Processing

To avoid confusion with different terminology we will refer to this section of our reviews as just "lag" from now on, as there are a few different aspects to consider, and different interpretations of the term "input lag". We will consider the following points here as much as possible. The overall "display lag" is the first, that being the delay between the image being shown on the TFT display and that being shown on a CRT. This is what many people will know as input lag and originally was the measure made to explain why the image is a little behind when using a CRT. The older stopwatch based methods were the common way to measure this in the past, but through advanced studies have been shown to be quite inaccurate. As a result, more advanced tools like SMTT provide a method to measure that delay between a TFT and CRT while removing the inaccuracies of older stopwatch methods.

In reality that lag / delay is caused by a combination of two things - the signal processing delay caused by the TFT electronics / scaler, and the response time of the pixels themselves. Most "input lag" measurements over the years have always been based on the overall display lag (signal processing + response time) and indeed the SMTT tool is based on this visual difference between a CRT and TFT and so measures the overall display lag. In practice the signal processing is the element which gives the feel of lag to the user, and the response time of course can impact blurring, and overall image quality in moving scenes. As people become more aware of lag as a possible issue, we are of course keen to try and understand the split between the two as much as possible to give a complete picture.

The signal processing element within that is quite hard to identify without extremely high end equipment and very complicated methods. In fact the studies by Thomas Thiemann which really kicked this whole thing off were based on equipment worth >100,1000 Euro, requiring extremely high bandwidths and very complicated methods to trigger the correct behaviour and accurately measure the signal processing on its own. Other techniques which are being used since are not conducted by Thomas (he is a freelance writer) or based on this equipment or technique, and may also be subject to other errors or inaccuracies based on our conversations with him since. It's very hard as a result to produce a technique which will measure just the signal processing on its own unfortunately. Many measurement techniques are also not explained and so it is important to try and get a picture from various sources if possible to make an informed judgement about a display overall.

For our tests we will continue to use the SMTT tool to measure the overall "display lag". From there we can use our oscilloscope system to measure the response time across a wide range of grey to grey (G2G) transitions as recorded in our response time tests. Since SMTT will not include the full response time within its measurements, after speaking with Thomas further about the situation we will subtract half of the average G2G response time from the total display lag. This should allow us to give a good estimation of how much of the overall lag is attributable to the signal processing element on its own.


Lag Classification

To help in this section we will also introduce a broader classification system for these results to help categorise each screen as one of the following levels:

  • Class 1) Less than 16ms / 1 frame lag - should be fine for gamers, even at high levels

  • Class 2) A lag of 16 - 32ms / One to two frames - moderate lag but should be fine for many gamers. Caution advised for serious gaming and FPS

  • Class 3) A lag of more than 32ms / more than 2 frames - Some noticeable lag in daily usage, not suitable for high end gaming

For the full reviews of the models compared here and the dates they were written (and when screens were approximately released to the market), please see our full reviews index.

(Measurements in ms)


Total Display Lag (SMTT 2)


Pixel Response Time Element


Estimated Signal Processing Lag


Lag Classification


 Class 1

We have provided a comparison above against other models we have tested to give an indication between screens. The screens tested are split into two measurements which are based on our overall display lag tests (using SMTT) and half the average G2G response time, as measured by the oscilloscope. The response time is split from the overall display lag and shown on the graph as the green bar. From there, the signal processing (red bar) can be provided as a good estimation.

The screen showed a total average display lag of only 5.00 ms as measured with SMTT 2. Taking into account half the average G2G response time at 4.35ms, we can estimate that there is ~0.65 ms of signal processing lag on this screen. Basically nothing at all. This puts it on par with the old U2414H model as well which is great news and means the screen should be fine for gamers.

Movies and Video

The following summarises the screens performance in video applications:

  • 23.8" screen size makes it a reasonable option for an all-in-one multimedia screen, but being quite a bit smaller than most modern LCD TV's of course.

  • 16:9 aspect ratio is more well suited to videos than a 16:10 format screen, leaving smaller borders on DVD's and wide screen content at the top and bottom.

  • 1920 x 1080 resolution can support full 1080 HD resolution content

  • Digital interfaces support HDCP for any encrypted and protected content

  • Good range of connectivity options provided with DisplayPort, Mini DisplayPort and 2x HDMI (with MHL) offered.

  • Cables provided in the box for DisplayPort to Mini DP only.

  • Light AG coating a positive change providing clean and clear images, without the unwanted reflections of a glossy solution.

  • Wide brightness range adjustment possible from the display, including a maximum luminance of ~240 cd/m2 and a decent minimum luminance of 30 cd/m2. This should afford you good control for different lighting conditions. Contrast ratio remains stable across that adjustment range as well and is excellent for an IPS-type panel. Brightness regulation is controlled without the need for PWM and so is flicker free for all brightness settings.

  • Black depth and contrast ratio are strong for an IPS-type panel at 1228:1 after calibration. Detail in darker scenes should not be lost as a result.

  • There is a specific 'movie' preset mode available for movies or video if you want but it is much cooler than our calibrated custom mode. May be useful to some though.

  • Good pixel responsiveness which should still be able to handle fast moving scenes in movies without issue. No overshoot issues which is pleasing.

  • Wide viewing angles thanks to IPS-type panel technology meaning several people could view the screen at once comfortable and from a whole host of different angles. They are not quite as wide as we would have liked vertically, showing more colour tone shift compared with other IPS panels we've tested.

  • IPS glow is moderate meaning you might experience some annoying white glows on darker content from an angle. It is not a low-glow panel like the U2414H before it.

  • Very good and mostly easy to use range of ergonomic adjustments available from the stand, so should be easy to obtain a comfortable position for multiple users or if you want to sit further away from the screen for movie viewing.

  • No particularly noticeable backlight leakage, and none from the edges which is good. This type of leakage may prove an issue when watching movies where black borders are present but it is not a problem here.

  • No integrated stereo speakers on this model but it is compatible with Dell's SoundBar if you want. There is also an audio output connection.

  • Moderate range of hardware aspect ratio options with 16:9, 5:4 and 4:3 modes available which should be fine for most uses.

  • Picture in picture (PiP) and Picture By Picture (PbP) are not available.


Dell have produced another excellent all round screen here, and one that does the well-established UltraSharp brand proud. The design remains basically identical to the old model but is sleek and attractive, and also very practical for multi-screen setups should you want. As ever, Dell have provided a decent stand and a wide range of connectivity options for what is still a very reasonably priced display. We really liked the addition of the wireless charging function on this HJ model and we hope to see that become more popular as the technology is integrated in to more devices in the future.

The default setup and factory calibration of the screen was strong and we were very impressed with the high contrast ratio from this IPS-type panel. The light AG coating and flicker-free backlight were as welcome as ever of course. Response times were as good as you can hope for from a 60Hz IPS-type panel and lag was non-existent too. We were a little disappointed with the viewing angles of this Samsung panel, being a little more restrictive vertically than we are used to. Also the U2414H had been a nice low-glow panel which has been dropped here which is a shame. It was never part of their spec or anything, but it's a shame they couldn't continue to use a low-glow panel option here.

If we compare it to the old U2414H there isn't a huge amount that's changed. The design, stand and connectivity options are basically identical. On this HJ model they have at least added the wireless charging function which is welcome. Underneath all that the panel characteristics are very comparable in many places, and both offer excellent all round performance. The pixel response times and lag are basically the same, flicker free backlights are used on both and of course things like the resolution remain unchanged. There is a little difference between the two though. We felt the U2417HJ had the edge in terms of the out-of-the-box setup, with a more accurate factory calibration and certainly a decent contrast ratio improvement. On the flip side, the viewing angles were a little more restrictive, it didn't use a low-glow panel like its predecessor and the uniformity wasn't as good (on our sample). There's not really much to separate the two unless you specifically want the wireless charging function, or if the U2414H is no longer available to buy.

In terms of the 3 versions of this U2417H, again that really just comes down to whether you want the wireless charging function and additional HDMI port that the HJ model offers. Regardless, all 3 should offer very good all round performance and would be excellent choices in the 24" space we expect. Our U2417H review should be published soon as well to compare if you are more interested in the H / HA models.

If you appreciate the review and enjoy reading and like our work, we would welcome a donation to the site to help us continue to make quality and detailed reviews for you.



Good factory calibration, strong contrast ratio and great all-round performance

Viewing angles more restrictive than we are used to from this technology

Decent responsiveness and very low lag for gaming

Moved away from a low glow panel of the U2414H

We liked the new wireless charging function on the HJ model

Uniformity could have been better (may vary)

Dell U2417HJ Now Available



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