With three 780 Tis in SLI, I max out 3GB of VRAM at 2560x1080 x5 (practically Ultra in DX11), and I think I'm probably somewhere around 50% load on them—This is in the outside world in Northrend. I don't know what to say about a monitor except... At least 1440, and preferably IPS. I know nothing about GSync except that it only works in Fullscreen mode, so you won't be using it while multiboxing.

Quote Originally Posted by mbox_bob View Post
I'd be interested to know how the Acer supports 144Hz, seeing as GSYNC doesn't support DP 1.3 (needed for 4k rez at higher RR that 60Hz). Presumably it is at lower resolutions, like 2560x1440.
I think that's actually misprint on their website. The Acer site doesn't mention the 144Hz, nor does Anandtech's review. Also, from the comments of the PCPer review:
I set the panel to 1920x1080 and we were still limited to a 60 FPS refresh rate.