The best 4k HDR gaming TV we've tested so far is the LG CX OLED. This is the replacement of the very popular LG C9 OLED from 2019, and it has largely similar overall performance. Its ability to produce perfect blacks makes it an excellent choice for gaming in the dark, and since there's no backlight, it doesn't have any issues with blooming around bright objects in dark scenes. It has wide viewing angles, it gets bright enough to overcome glare easily, and it handles reflections exceptionally well. Gray uniformity is great on our unit; however, your experience may vary.

Like all OLEDs, the response time is near-instantaneous. Combined with its 120Hz refresh rate, fast-moving scenes look crisp and buttery smooth. To reduce screen tearing, it supports FreeSync, HDMI Forum's VRR, and it's certified to be compatible with NVIDIA's G-SYNC. Input lag is extremely low and it remains low even when playing in 10-bit HDR. As for its HDR performance, this TV has an excellent wide color gamut and it can get decently bright to make highlights stand out. Unfortunately, it has an aggressive automatic brightness limiter (ABL) that causes the brightness to vary a lot when displaying different scenes.

As always, there's the issue of permanent burn-in with OLED TVs. This happens when certain elements stay static on the screen for an extended period, such as a channel logo or the user interface of a game. That said, it shouldn't be an issue if you watch varied content. Most common resolutions are supported and it can display proper chroma 4:4:4 for gaming on a PC. All in all, this is an excellent TV for gaming in HDR and one that most people should be happy with.