LG UltraGear OLED 27 Gaming Monitor Review: Part Beauty, Part Beast HDR, OLED's naturally high contrast and a 240Hz refresh rate can make games look beautiful, but this monitor's brightness behavior may make other tasks beastly. LG's UltraGear gaming displays are among the hottest fashions you should buy, so the $1,000, 240Hz 27-inch UltraGear 27GR95QE-B OLED HDR mannequin