AOC Q27G40XMN with 27″ 1440p 180Hz VA Panel and Mini LED Backlight Released

Very little official information seems to be available for this monitor, but AOC have recently released a new gaming monitor in their line-up with a 27″ screen size, 1440p resolution, 180Hz refresh rate, a 1,152-zone Mini LED backlight and a very attractive price point. It seems to be an update to the very popular AOC Gaming Q27G3XMN we reviewed in the past, now with an improved number of Mini LED local dimming zones.

AOC Q27G40XMN Specs
The screen is 27″ in size with a flat format. It’s built around a VA technology panel and offers a 2560 x 1440 resolution, 1ms G2G response time spec, 5000:1 contrast ratio, 450 nits brightness (SDR), 178/178 viewing angles, 10-bit colour depth and a wide colour gamut covering 97% DCI-P3. It has a 180Hz refresh rate which is supported by adaptive-sync for VRR, and has been certified under the NVIDIA ‘G-Sync Compatible’ scheme.
The 1,152-zone Mini LED backlight offers high-end HDR capabilities, including decent local dimming (certainly compared to common edge-lit options), as well as certification under the VESA DisplayHDR 1000 tier and a peak brightness spec of 1200 nits.
For connectivity there are 1x DisplayPort 1.4 and 1x HDMI 2.0 connections provided along with a headphone jack. The stand has a limited tilt-only function.

Improvements compared with the Q27G3XMN
The G40XMN has a few updates relative to the previous G3XMN model as far as we can tell at the moment, in the absence of much official information from AOV. The contrast ratio spec has been updated from 4000:1 to 5000:1 with a new VA technology panel being used. The main change has been with the improved Mini LED backlight, now with 1,152 zones instead of the 336 zones on the old model. This in turn has allowed for a higher peak brightness spec of 1200 nits instead of 1000 nits on the older model.
Pricing and availability
The screen has appeared on Bestbuy in the US at an attractive price of $299.99 USD. We’ve reached out to AOC to get more official information on the screen and it’s release in other regions.
We may earn a commission if you purchase from our affiliate links in this article- TFTCentral is a participant in the Amazon Services LLC Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Amazon.co.uk, Amazon.de, Amazon.ca and other Amazon stores worldwide. We also participate in a similar scheme for Overclockers.co.uk, Newegg, Bestbuy , B&H and some manufacturers.
Stay up to date
![]() | ![]() | ![]() | ![]() |
| Browser Alerts | Follow on X | Subscribe on YouTube | Support Us |
The Best Black Friday Monitor Deals – Tracker

Popular Trending News
The 500Hz+ OLED Monitor Availability Tracker November 17, 2025 Originally published 14 Aug 2025, last updated 17 November 2025 We did one of these trackers back when the LG 45GX950A was released and people found it very useful, so we thought we would do another one now that the…
Availability and Pricing Update for the Asus ROG Strix XG27AQWMG October 13, 2025 Since this screen was unveiled back in August at Gamescom we’ve had a lot of people ask if we have any further information on its release date and pricing. This is their upcoming 27″ monitor featuring a 4th Gen WOLED…
Asus Unveil Pricing and Release Details for the ROG Swift PG27AQWP-W November 7, 2025 In a press release today Asus have unveiled some further details about the release of their eagerly anticipated ROG Swift PG27AQWP-W OLED gaming monitor. First unveiled at Gamescom 2025 in August, the PG27AQWP-W boasts a 27″ screen size with a…
Asus to Refresh Their Popular 32″ QD-OLED Monitor with the ROG Swift PG32UCDMR May 21, 2025 Showcased at Computex 2025 this week was a refreshed and updated version of Asus’ popular ROG Swift PG32UCDM monitor. The ROG Swift PG32UCDMR (with an R on the end now) offers the same 32″ 3840 x 2160 “4K” resolution QD-OLED…
AOC AGON Pro Announced with 32″ 4K IPS Panel and Mini LED Backlight October 20, 2025 AOC have recently unveiled a new gaming monitor in their AGON Pro line-up which delivers high end specifications for gamers looking for an LCD monitor. This 31.5” sized ‘Fast IPS’ panel boasts a “4K” resolution and 160Hz refresh rate. It…




