I didn't read the whole thread, but you guys both arguing moot points ^, sli or oc?
How about just ditching the 650 and going with a 770 or even 780?
Op, sell the 650 while its still worth something and get a high end card. You have a fine cpu and a ton of memory, why sell yourself short on a video card? Only thing I didnt see is ssd, youll need that too!
Exactly my advice. The guy above seems to think I advised SLI, sadly he cannot read.