the hd7870ghz edition would be a better option than the gtx660. It would practically perform as good as the hd7950. gtx660 twin frozr would overclock too but it won't break the hd7950/gtx670 margin.
the hd7870ghz edition would be a better option than the gtx660. It would practically perform as good as the hd7950. gtx660 twin frozr would overclock too but it won't break the hd7950/gtx670 margin.