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The LG UltraGear 27GL850-B is a very good 1440p monitor. It has an outstanding response time, quicker than most 144Hz monitors we’ve seen so far. This results in exceptionally clear motion in any scene, with almost no blur behind fast-moving objects. It also has outstanding low input lag for a responsive gaming experience. This monitor supports AMD’s FreeSync variable refresh rate (VRR) technology, and it’s also NVIDIA certified as G-SYNC compatible, so VRR works automatically with recent NVIDIA graphics cards. Unfortunately, like almost all IPS monitors, it doesn’t look as good in dark rooms, as it has a disappointing contrast ratio and poor black uniformity.
Even with its limitations and few odd quirks, the LG 27GL850 is an excellent and impressive monitor. It offers the hands-down best IPS screen I’ve seen to date and a level of responsiveness that makes it a good fit for casual and competitive games alike. LG has a definite winner on its hands.