This thing will chew up any game you can throw at it in 1080p. My next goal is 4k. I want at least 60 Hz though, so I will wait for both a monitor and video card that can easily support it.
32GB of RAM is awesome for playing with a RAMdrive. I don't do much in the way of productivity, mostly just benchmarks and messing around. Also the 840 EVO in RAPID mode is amazing.
I have this hooked to a Synology DS214 Play upstairs, and my 60" Sharp Aquos television downstairs. I also use to it stream Steam games to my Surface Pro 3 when I want to be in the living room instead of at my desk.