A connected PC or other external device can be used by ... HDMI 2.1 or DisplayPort 1.4 to handle 4K at up to 144Hz. We test 4K monitors with a Datacolor Spyder X2 Ultra color calibration tool.

With a gorgeous OLED panel delivering a crisp 4K resolution for less than the competition—it just makes so much sense to a PC gamer. The LG UltraGear 27GR93U is my favorite non-OLED 4K gaming ...