As the topic which is going to be better choise :? and between gtx 670 and hd 7970 ? and will there be much difference in the gaming quality i mean the physx ?
Even playing games that don't support PhysX, I would still go for the GTX 670. There really is no performance difference. If there is any chance at all you might play a PhysX game over the next 3-4 years, even a downloaded demo, then I would absolutely go for the GTX 670. I look at it this way, why vote yourself out of the PhysX club when the option is on the table and the alternative is no better?