buy a nvidia gtx 670 its around the same price of 7950 and give much better performance with intel processors
I don't know where you are but HD 7950 is much cheaper than GTX 670. HD 7970 is the same price as GTX 670.
Why would you get a GTX 670 if HD 7970 is the same price and will curb stomp it into the ground.
HD 7970 is the best choice if you are even considering buying a GTX 670 since it comes with 2 games and is cheaper.