I installed xp on a "Intel celeron 433Mhz, 64mbram, integrated video" and it ran much better than expected! I just installed xp, disabled themes and a 6-7 other services like error reporting,indexing,system restore.. The same version of Opera on this 64mb ram PC was running faster than on my PIII 733Mhz 384MB ( ubuntu)- windows runs equally fast!! remember roadrash( that old demo game tha every one of has played) , even that ran just fine on this PC. Other things: windows explorer also was running at top notch speed with instant startup and instant alt+tab switching.. Of course I could feel the effect of a 64mb ram sometimes. But for regular PC operations it ran just fine!! --on 64mb ram.. And now I see ppl putting 2GB ram on their xp's I guess gaming would require such numbers what is there really any need for over 700-800mb for xp?