I bought the GTS in my sig a few weeks ago to replace my 8600 GT; and ever since I installed the card my computer randomly freezes. There is no warning or pattern to when the computer will freeze but it seems like every couple of hours I have to restart my computer again. I was wondering what kind of input everyone had as to what the problem is, whether its overheating or not enough power etc so any input would be appreciated. btw I haven't overclocked the card past the overclocked speeds it came at. and Im using XP SP3 if that has any bearing.