In the seven game titles that we tested today, we found the NVIDIA GeForce GTX 680 to be 14.34% faster than the stock AMD Radeon HD 7970 reference card when we compared all of the tests results at a resolution of 1920x1080. Factor in that the GeForce GTX 680 costs $50 less and you got yourself some pretty good reasons to go with an NVIDIA GeForce GTX 680 over an AMD Radeon HD 7900 series card..."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips