Matt-Matt wrote...EDIT: WOW at that picture, I almost forgot about it... Wow
...yeah, I put it up again because every time I look at it, I figure this thing could be cooled just with the drool people drip all over it. Mind you, this is for OpenGL, and on top of that likely will never see Cross-Fire - just all those cuda cores will be busy doing compiling and rendering.
A friend and neighbor of mine is heading a development company that works on 4k video streaming in real time, and they build similar things (mind you, they use 7970ies). I have seen them put together 20 machines or so with Asus ROG Crosshair boards, stuffed to the gills with those cards - but none of them with Cross-Fire - all work, no play (actually, there is one special machine based around X79 / LG2011 which has a bit more fun, but only sometimes).
Another point about the picture above is the 'industrial beauty'...the solid elbow joints (look like brass?), the perfectly cut thick hoses (extra large for the CPUs), the diamond-edged thumb screws...no bling bling, just sheer, unadulterated horsepower...sort of like the SR 71 Black bird of cuda cores