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iiyama G-Master GB3466WQSU Ultrawide Monitor Review

Rating: 9.0.

Ultrawide monitors have been around for a while now, but pricing has often been a significant deterrent to making the switch from a traditional 16:9 screen. That appears to be changing, however, as we first reviewed the £500 AOC CU34G2X back in January, and today we review iiyama's G-Master GB3466WQSU – a 3440×1440 ultrawide with a 1500R curved VA panel and 144Hz refresh rate.

Watch the video via our VIMEO Channel (Below) or over on YouTube at 2160p HERE

Of course, we have reviewed plenty of panels with a similar specification, but almost all are several hundred pounds more expensive. The real kicker for iiyama's GB3466WQSU is the fact it is offering that 144Hz curved UWQHD goodness for £439, £60 less than the AOC CU34G2X. Usually ultrawides at this price-point have slower refresh rates (around 75-100Hz), or lower resolutions (like 2560×1080).

Alongside those key specs, the GB3466WQSU also supports AMD FreeSync Premium Pro, a claimed 400cd/m2 brightness as well as a claimed 1ms MPRT. Could this become the go-to option if you want a 21:9 monitor without spending over £500?


  • Diagonal: 34″, 86.5cm
  • Panel: VA LED, matte finish
  • Curved: 1500R
  • Native resolution: 3440 x 1440 @144Hz (4.9 megapixel UWQHD, DisplayPort)
  • Aspect ratio: 21:9
  • Brightness: 400 cd/m² typical
  • Static contrast: 3000:1 typical
  • Advanced contrast: 80M:1
  • Response time (MPRT): 1ms
  • Viewing zone horizontal/vertical: 178°/178°, right/left: 89°/89°, up/down: 89°/89°
  • Colour support: 16.7mln 8bit
  • Horizontal Sync: 30 – 160kHz
  • Vertical Sync: 48 – 144Hz
  • Viewable area: W x H 797.22 x 333.72mm, 31.4 x 13.1″
  • Pixel pitch: 0.23175mm
  • Colour: matte, black

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