I bought a geforce 6600 about a year ago.I installed it on xp(service pack2) but it showed graphical corruption in games in windows xp.I did a lot of troubleshooting and found out it was the power supply that was not up to the mark.I then installed a 400 watt power supply and the graphical corruption in games went away.Now I have moved on to vista and the grphical corruption is back in games.I wanna know whether this is because vista uses more power or the crappy windows vista nvidia geforce drivers cause such corruption what do u people say?