I updated my gaming rig a bit last night with a new 27" 2560x1440 IPS monitor, and I'm seriously impressed. For anyone who's counting, that's 4 times the native resolution of the Xbox One, and 50% higher resolution than 1080p.
Color quality is better than my old 1080p monitor, but render quality is really where it shines; needless to say I suddenly desire a new video card. FarCry3 was bringing my rig down to sub 30fps with max settings at 2560x1440 windowed mode, it was very humbling after playing that same game on max at 1080p easily for over a year.
What does everyone else use for gaming? If not gaming, what is your preference for computers?