Replaced my GT9800 with GTX 550 Ti for $129 and my FPS is definitely an improvement. I only have a q6800 quad 2.4, so getting a high end card isn't going to improve much over what I have. Its still crazy how my fps can fluctuate between 30 and 50 fps. I'm running just about everything on high at 1680 X 1050 and its amazing. But there are times when I run at 40 to 50 fps and 30 to 40 fps which is frustrating because lowering settings doesn't help much. Game is very playable when dipping to 30 but it feels so smooth when it's above 40.