AOC CU34G2X Curved Gaming Monitor Review: Speed, Immersion and HDR

The speed you need, but HDR’s lacking.

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AOC CU34G2X Curved Gaming Monitor
(Image: © Shutterstock, AOC)

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Viewing Angles

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Applying an HDR signal to the CU34G2X automatically switches it to HDR mode, where you’ll find four picture options. DisplayHDR, the default, is by far the best, and it’s the only one that doesn’t apply edge enhancement to contrasting objects. 

Screen Uniformity

To learn how we measure screen uniformity, click here.

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Curved monitors are generally less consistent when it comes to screen uniformity, but the CU34G2X is clearly one of the better examples. Our sample showed no visible issues, even at the edges. The anti-glare layer is fitted tightly, making that performance even more impressive. The picture modes include a uniformity option that marries up with the included calibration data sheet, but that only serves to raise black levels. Clearly, it’s not necessary anyway;  9.09% is a solid score in this test. 

Pixel Response and Input Lag

Click here to read up on our pixel response and input lag testing procedures.

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In the response time test, the CU34G2X was just 1ms off from the 165 Hz screens. We thought it would beat the 120 Hz AG493UCX, but it didn’t quite pull that off. It did lop 2ms off the total lag score, fitting in right between the 120Hz and 165Hz levels, as it should. While the most competitive gamers will want even less lag, the majority of players will enjoy the smoothness and responsiveness of the CU34G2X. We certainly observed no issues during gameplay with perfect synchronization of our gaming mouse and gaming keyboard inputs to on-screen action. 

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Christian Eberle
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.