This is another tough one - these graphics card releases that are almost always easy to decipher and make recommendations around at the high end but become pretty cluttered in the sub-$200 markets as the crowds increase. The new GeForce GTX 650 Ti from NVIDIA struggles to find a comfortable place in our performance and pricing schemes at $149 between the HD 7770 and the HD 7850 1GB. Looking at only the cards themselves, the Radeon HD 7850 1GB at $179 makes a better a case for mainstream gaming selection than the GeForce GTX 650 Ti. Adding in the Assassins Creed 3 deal and you definitely perk up the appearance of the GTX 650 Ti without a doubt, but only if you find that title appealing."
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