Currently I own a ATI 1600x 512mb pro. It does most things for me, but I am looking to upgrade for Crysis. There is a deal on Black Friday where I can snatch a 2600 HD 512mb for $99.99. If I upgrade, will I see any boost in performance, if any? Should I do it? I do 3-4 hours of gaming on weekends, 2-3 on weekdays. Thanks ~