Best 4k gaming monitor for Xbox One X

The best 4k gaming monitor for Xbox One X is the LG 27UK650-W. It has good all-around performance and includes great gaming features packed into a stylish, modern design. It has a large 27 inch screen and 4k resolution to deliver an immersive gaming experience, and its wide viewing angles make it a great option for co-op gaming.

Its refresh rate is limited to 60Hz, but this shouldn't an issue if you're only gaming on the Xbox One X. It has a fast response time that results in minimal motion blur and native FreeSync support to reduce screen tearing. Input lag is extremely low and remains low even when playing with VRR or HDR enabled. As for its HDR performance, sadly, it can't display a wide color gamut, and it doesn't get bright enough to make highlights pop, so HDR content doesn't look much different from SDR content. It gets bright enough for use in most rooms, but it may struggle a bit in very bright settings.

Unfortunately, it doesn't perform all that well in dark rooms, as it has a low contrast ratio and sub-par black uniformity. There aren't many extra features on this monitor. You do get a black stabilizer feature that can make objects more visible in dark scenes and an upscaling feature to make lower resolution content look better. The backlight is flicker-free, which is great for reducing eye strain during long gaming sessions. Overall, it's a good, versatile monitor that should satisfy most people.