I just installed a brand spankin new x1600 pro 512mb card, and I gotta tell ya, I'm a little disappointed. I had an evga geforce 5500 256mb card installed and overclocked to 306/475, and I thought having the new card even without being over clocked would be an improvement with it 500/400 and 512mb of memory. I have all the latest relavent drivers from ati and dx, but it still sucks! well,not totally. 1. Load times are shorter. 2. When playing a game,and standing still, everything has much much greater detail, but I can't move smoothly. the 5500 , although slightly less detailed, moved extremely smooth through games, but this one stops for a split second every 3 or 4 seconds, it's not fluid at all. any ideas? 500/400 (800 effective due to the DDR2) am I wrong in thinnking this?