I agree with above however skip the 660 ti i would be all over that Asus 670 TOP for its high factory overclock, cool temps, and really, really quiet fans,heavily modified PCB, with an efficient VRM design to produce low temperatures, improved voltage regulation circuitry, much better Chil controller , specially binned chip and voltage control and monitoring support that you won't find on most other non-reference cards.The thing a straight beast!Once you own one of those cards all bets are off!TechPoweUp gives the 670 TOP an 10.0 rating, the only 10.0 rating ever http://www.techpowerup.com/reviews/ASUS/GeForce_GTX_670...
Overall the ASUS GTX 670 Direct CU II is the best card I ever tested.I simply can't find anything wrong with it.
P.S. Make sure it's the TOP not the pretender top DC2 to my understanding the TOP uses higher specially binned chip non top does not.
I did some research, and found out that the GTX 670 actually is a really bad card. Alot of people are having problems with it, it's like a 50/50 chance wether it's good out of the box or not.. Pff that sucks! I'd love to get it but this made me change my mind!
Or do you think ASUS fixed it by now? They even stopped the production it seems
I think some were bad not all though because my friend has one it's a beast the reason i believe there not the same is my friends Top card out preforms a few of our friends non Top DC2 i waited for months to try and get the Top in the end i had to go with MSI because i couldn't get the real top that TechPoweUp tested i think the other fella that reply works for Asus maybe he knows more info.