I have it on two computers an amd 800 tbird with 768MB it works pretty good there, and an intel p4 2.56 with 1 gig works better there but why shouldnt it at well over twice the speed and more ram. the big factor is OS IMHO P5 seems to get along better with Win XP then anything else though I havn't really heard too many horror stories about 2000, if you are nursing 98 or shudder ME then I would upgrade the OS