Wow, to think Nvidia couldn't make it any harder on AMD. I was honestly expecting only GTX 580 performance, but they really blew this one out of the water. Now I'm curious if they will release the GTX 660 with performance on par with a GTX 580 at $299. Two of those babies in SLI for only $600 will be killer. Oh well, glad I have my GTX 680. Was lucky to nab one for $400 off craigslist. But honestly if I didn't have this 680, I would have just bought the 670 and by the looks of it would have been just as happy.