I bought myself 2 EVGA FTW 670's a while back, and as they were the FTW editions I managed to OC each of them enough to out-perform the 770. Its now over half a year down the line, and my 2 670's still beat a Titan, and for £200 less (Going by the price I paid for them, £300 apiece). As far as performance goes, I can play any game at Ultra/High settings, depending on the game. I'm going to wait now until the 800 series and the 20nm technology before I think about upgrading again, it might be worth it by then...