iiyama GB2771UHSU Review (Budget 4K Dual-Mode)

1. Introduction2. Design3. On-screen Display (OSD)4. Panel Analysis: SDR5. Response Times & Motion Clarity6. Input Latency7. Closing Thoughts8. View All Pages

All in all, there is no other way to describe iiyama's GB2771UHSU than as a big disappointment, and it is absolutely not a monitor we can recommend at this point in 2025.

It's really a great lesson in why monitor reviews matter so much – you can have the best spec sheet in the world, but if something hasn't been implemented properly, it does not matter one jot, and that is perfectly exemplified by the GB2771UHSU.

Put simply, this monitor is just far too slow to be a viable contender. We measured best-case response times north of 11ms at 288Hz, and while it is slightly faster at 144Hz, even then it's still the second slowest screen we've ever tested with a 9.87ms response.

The results are more than slow enough to be considered a deal-breaker in this day and age. It's not like this is the first dual-mode screen to market and you've got no other choice – the market is the most competitive it has ever been, and loads of gaming monitors at or around this price point offer vastly superior gaming performance, just look at the Philips Evnia 27M2N3501PA or the AOC U27G4R for just two examples.

It's not like the rest of the panel's performance can save it, either. While it gets pleasingly bright and contrast is very good for an IPS screen, factory calibration is mediocre at best, with a noticeable green tint to the image, while the sRGB flat out doesn't work – so that's another thing that needs to go back to the drawing board.

So that is it – the iiyama GB2771UHSU is simply not worth thinking about if you are in the market for a new gaming monitor. Let's hope the company can do better next time for everybody's sake.

Pros

• Brightness hits almost 500 nits.
• Strong contrast at around 1600:1.
• Clean and simple design.
• Wide range of ergonomic adjustments.

Cons

• Response times are some of the slowest we have ever seen.
• Gaming just looks blurry and smeary as a result.
• Plenty of screens can out-perform it at this price point.
• sRGB mode simply doesn't work.
• Factory calibration is mediocre at best.
• Viewing angles aren't great by IPS standards.
• No KVM functionality.

KitGuru says: Save your money and buy something else – it's not like the market is short of options!

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