AOC U27G4XM 27-inch 4K 160 Hz Dual-Refresh Gaming Monitor Review: Speed, Flexibility And Value

It’s a 27-inch dual-mode IPS panel with 4K resolution at 160 Hz, FHD resolution at 320 Hz, and Adaptive-Sync.

AOC U27G4XM
Editor's Choice
(Image credit: © Tom's Hardware)

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With OLED commanding the premium market, it has driven down the prices of other premium technologies, namely 4K and Mini LED. It is now possible to buy a 27-inch 4K IPS monitor with wide-gamut color, 160 Hz, premium video processing, accurate imaging, and high brightness, and that is a clear sign of progress. The U27G4XM exemplifies that design goal for $350 and offers performance we’d have paid over $1,000 for just a few years ago. And did I mention the Mini LED backlight with 1,152 dimming zones? Yeah, it has that too. For perspective, Acer’s X27 from 2018 had 384 dimming zones, 4K, and 144 Hz for an eye-watering $2,000. Check out that review here if you’re curious.

(Image credit: Tom's Hardware)

The AOC U27G4XM is better than that Acer in every way. It has 1,152 dimming zones. It has 109% coverage of DCI-P3 color. It has 160 Hz and a 320 Hz FHD mode. It has lower input lag and better panel response – and it’s $350. That’s what eight years of progress looks like. My only complaints are that the OSD is controlled by buttons instead of a joystick, and the stand is secure but a little wobbly. But performance and image-wise, there are no flaws. For the money, I can’t fault it at all. It games with the very best and provides a bright, colorful, and accurate picture for work and play alike.

If you’re looking for an affordable 4K monitor that pairs well with budget and premium video cards alike, the AOC U27G4XM is well worth checking out.

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Christian Eberle
Contributing Editor

Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.