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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.

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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