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It’s nearly impossible to find a bad OLED monitor. They all have perfect blacks and infinite contrast. The 27-inch QHD category is particularly rich in options, all of which are excellent. Only a few tiny elements separate the excellent from the really excellent.
LG’s 27GX790A stands out in a few areas. It’s brighter than most with 415 nits for SDR and 763 for HDR, the highest I’ve seen from a 27-inch OLED screen. It has two levels of variable brightness and constant brightness too. And it ties my record for lowest input lag of any screen I’ve tested with 10ms. It’s only equaled there by Philips’ 27M2N8500. The deciding factor there is that the Philips tops out at 360 Hz, so when you get that next-gen PC, the 27GX790A will have 480 Hz to offer.
Image quality and gaming ability are accompanied by a premium build, a full feature set and plenty of flexibility. The 27GX790A is one of the few monitors with adjustments for sRGB and HDR modes with color temps and brightness controls. Though I noted room for accuracy improvements out of the box, it calibrated to the same high standard as any premium OLED.
For $800 at this writing, the LG 27GX790A is priced competitively and has standout features and performance. If you have the budget, and plan to keep your video hardware on the bleeding edge in the future, this is a monitor that should be on your shortlist.
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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.