get the 760 or if you can give 100$ more then get the 770
Radeon HD 7970 or the GTX 670
HD 7970(with Boost).
(AMD fan )
HD 7970 Easily
Your assumption is indeed correct.
The 7970 is the best for the price.
just to add to the Radeon side of things.... get the 7970. built a rig for a buddy using that card and it is fabulous.
As said, HD 7970 or a 670. Though it would really be worth it to spring for the 7970 GHz because its by and far one of the best cards around considering its price.