New. Plugged in and made sure it came on and screen was good. otherwise untested. 27" QHD IPS 1ms with 144Hz Specific Uses For Product Personal, Gaming Refresh Rate 144 Hz Brand LG Screen Size 27 Inches Screen Surface Description Hard coating (3H) About this item 27 inch QHD (2560 X 1440) IPS display IPS 1ms response time & 144Hz refresh rate NVIDIA G-SYNC Compatible. Surface Treatment-Haze 25%, 3H 3-Side virtually borderless design Tilt, Height, Pivot adjustable stand. Dimensions Without Stand (WxHxD)- 24.2 x 14.4 x 2.2 inches Clearer, Smoother and Faster With Adaptive-Sync (FreeSync) technology, gamers can experience seamless, fluid movement in hi-resolution and fast-paced games. It virtually eliminates screen tearing and stuttering. React Faster to Opponents Minimize input lag with Dynamic Action Sync so gamers can catch every single moment in real-time. Attack First in Dark Gamers can avoid snipers hiding in the darkest places and quickly escape situations when the flash explodes. Fluid Gaming Motion A ultra-fast speed of 144Hz allows immediate action on the screen. Objects are rendered more clearly for smoother gameplay and an almost surreal visual fluidity.