Originally Posted by Menno
Guys, I can get a 295x2 pretty cheap and already have 2x 290x Sapphire Tri-X 2-way running. 4-way crossfire with an extra 295x2 is possible now (just for the enthusiast fun of it lol). (Rampage IV Extreme + 3930K +corsair 750d well ventilated), but what PSU should I get? evga supernova G2/P2/ 1200W, 1300W or 1600W? The 2 sapphires are running of a old corsair HX850 now.
I can tell you 4 GPUs of 290X stature & a 3930k setup aka pretty much my setup, draws at least 1300W if not more from the wall, and that was on a PSU that has 91+% efficiency while pulling that much wattage. So I'd recommend a hefty unit of at least 1300W. I updated to a LEPA G 1600W. I do NOT recommend this PSU, it's wires suck butt, plugs are stiff & you can actually cut yourself trying to unplug them if you're not careful cuz they're that hard to unplug.