likedxm :
toddybody :
jrlawson :
The motherboard supports it yes. The power supply on the other hand may not. I've heard of people running sli 770 with only 750w but I believe that may be pushing the capabilities of the psu. To be safe I would get an 850w psu just so the psu isn't close to max output while gaming.
Just ran a PSU calculator with those specs at 100% load...643watts. 750w should be fine for now.
How accurate is this PSU calc? I know that Asus have one and it seems way off!
I'd stake my life on it.
LOL. Seriously, PSU calculators *shouldnt be open to wide degrees of variance. Now, there comes some flex if you dont account for an OC, a power hungry cooling set-up...etc. I ran your test with all the listed specs, and assuming you had 4 120mm fans. Shows you still have ~100 watts to spare. IMO, thats a healthy margin of safety...but if youre unconvinced, run your specs on several calculators and compare. Never hurts.
PS: If you really want the peace of mind, grab an 800w+ PSU. Anything by Seasonic, Corsair (AX is best), Rosewill, etc...is a good option. Im a Corsair Fanboy in full disclosure