GTX 670 vs Radeon HD 7970 vs GTX 670 TI

Palit GeForce GTX 670 JETSTREAM       (364,80)


Club 3D Radeon HD 7970 XT2 '13Series (399,48)


ZOTAC GeForce GTX 670 - AMP! Edition  (407,09)


wich one of these is the best for price/ prefromance ratio? 

and also if you have some experience whit one of this it would be nice to say if the are worth it ?

thanks for passing by.

The Radeon 7970 is on par with a GTX 680 (if not better in some games). In this case, the 7970 is better than the 670, easily. Consider though, that it does consume a bit more power than the 600 series cards. I can't tell you about the models you've mentioned in specific. But I recommend you look around a bit, and get something with nice cooling so you can overclock and get even more bang for you buck.