Iiyama Unveil the Improved G-Master G4380UHSU-B2 43″ 4K Gaming Monitor

Iiyama have updated their G-Master Red Eagle G4380UHSU model which now features upgraded connectivity with HDMI 2.1 and new USB Type-C ports data ports. This is an upgrade to their B1 model which was released in 2022 and is expected to be released this month.

Iiyama Red Eagle G4380UHSU-B2 Specs
The Red Eagle G4380UHSU-B2 is a large format 43” sized screen (42.5” accurately) and is built around a flat VA panel. It offers a “4K” 3840 x 2160 resolution, 0.3ms MPRT response time spec, 4000:1 contrast ratio, 178/178 viewing angles, 550 nits brightness (SDR) an 8-bit +FRC colour depth and an extended colour gamut quoted with an 85% NTSC coverage.

The panels 144Hz refresh rate is supported by adaptive-sync for variable refresh rates from compatible systems and includes certification under the AMD ‘FreeSync Premium’ scheme. The screen incorporates flicker free and blue light reducer technologies, with the stand allowing tilt adjustments only.

As with all G-Master models there is a Black Tuner feature which allows the user to adjust the brightness and the dark shades, thus providing better visibility in shadowed areas, ensuring that nothing gets missed on the screen.
Connectivity
There has been a marked improvement in the connectivity options which now boast 2x HDMI 2.1 connections and 2x DisplayPort 1.4 inputs. The screen also offers 2x USB Type-A v 3.2 and 2x USB Type-C (5Gbps, 7.5W) data ports, and a headphone jack. There are also 2x 7W speakers built in to the screen for audio.

Availability and Pricing
The G4380UHSU-B2 will be available during September at an anticipated retail price of £449.99 GBP.
Source: iiyama
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 |
Latest News Round-up

Popular Trending News
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…
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 ROG Swift PG27AQWP-W Announced with a 540Hz / 720Hz 4th Gen WOLED Panel and True Black Glossy Coating August 19, 2025 Announced today at Asus’ Gamescom 2025 event was the new ROG Swift PG27AQWP-W gaming OLED monitor, offering an amazing spec and loads of new, top-end features. We had a teaser about this back at Computex in May, but this is…
The 500Hz QD-OLED Monitor Availability Tracker October 15, 2025 Originally published 14 Aug 2025, last updated 20 October 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…
The Latest Monitor News and Updates (Round-up, Sept 2025) September 30, 2025 All the latest monitor news and updates from Sept 2025 in one place, including all your common questions answered




