Cooler Master GM34-CW 34-inch Gaming Monitor Review: Color For Days

Massive color gamut with 144Hz, HDR and FreeSync.

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Cooler Master GM34-CW
Editor's Choice
(Image: © Cooler Master)

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Viewing Angles

(Image credit: Tom's Hardware)

The GM34-CW isn’t great for sharing with off-axis viewing; that’s typical of VA screens. To the sides, we can see a 50% reduction in brightness and a clear shift to red. The vertical plane is much the same, with a further reduction in detail. The steps are all visible but not well defined. 

Screen Uniformity

To learn how we measure screen uniformity, please click here. 

(Image credit: Tom's Hardware)

Our GM34-CW racked up another accolade in addition to its large color gamut, delivering one of the best black field uniformity scores we’ve recorded. There are no parts of the screen that are visibly brighter or darker than any other. Bleed and glow are completely non-existent. When viewed in a dark room, every brightness step is perfectly uniform. 

Pixel Response and Input Lag 

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

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Cooler Master GM34-CW
(Image credit: Tom's Hardware)

In addition to all that color, the GM34-CW is lightning fast. With a 7ms draw time, it matches most 144Hz displays and is only pipped by the X35 running at 200Hz. It makes up for that and more in the lag test where it takes first place with a 25ms score. It doesn’t get much quicker than that. Only a few 240Hz panels have lower input lag. Competitive gamers should have no problem increasing their frag count with one of these panels in their arsenal. 

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.