Hi there guys Could anyone plz advice me on wot to do.... I have the Asus P5B motherboard running 1x512mb DDR2 800 & 1x256 DDR533.I have a thermaltake 430watt psu & a geforce 7600GT card. Currently Im overclocking my cpu @ 2.5gigs and it seems fairly stable with the stock heatsink & fan but almost all articles & reviews that I'v read - they all seem to overclock it to around the 3.0gig mark!! unfortantely with me tho when I hit 2.81gig with FSB @ 400 my comp restarts itself when I get to the windows start-up logo. any advice on wot u think i could try??also im wanting to get a new heatsink & fan & advice on which 1 i shud go for would be greatly appreciated. thanks!!!!