Just upgraded to a Powercolor X800XT from a 9800 Pro and I'm having problems on certain games. Far Cry and HL2 run flawlessly but the likes of Rome Total War and Lord Rings Battle for Middle Earth stutter to such an extent that they are unplayable. Both these games ran fine on my 9800 Pro with the same game settings! Any ideas anyone? System specs are XP3000. 1 gig RAM and OS is XP Pro, all of this is unchanged since my upgrade!