Hi Folks, I've just built a gaming rig from some old parts I had, but mostly new - Asus Rampage IV, i7 4930k, Corsaid H100i, 32 gb ram from old machine, 2 x Radeon 7870 in crossfire, Cooler Master Cosmos 2 case....
I decided just to try it with my Corsair AX 750 watt PSU...and seemed to be fine...