I've been using vista ultimate x64 with these specs: Intel E2180 OC'd to 3.1 Ghz 4gb a-data ram gigabyte P35 DS3L EVGA Geforce 8800GT 512mb gfx card Corsair TX750 PSU I've been having issues with FPS loss in games like TF2 and now Warhammer. These games have been gradually dropping in performance. So I'm wondering if (even with 4gb, not all being used) XP 32-bit pro will be more efficient in running these games. (all games in general?) Maybe I just need to reformat and start fresh again with my Vistax64?