hi,i got 2xgtx480 a few weeks ago,i started running them at stock 700/1400/1850/ithe default volts were 1.025,now 2weeks ago i overclocked them to 825/1650/1950 and put the voltage up to 1.063,within a week i started getting crashes while playing cod,the screen started breaking up and going mad colours and stuff then it would reboot,so i put everthing back to stock settings and tried again,same problem crashed within 2minutes in cod,the strange thing is i noticed was in msi afterburner,all the clocks were back at stock except for the voltage,it was still at 1.063,everytime i try to reset msi the clocks will reset but voltage will stay 1.063 instead of going down to stock 1.025,i have to do it manually or it will stay there,ive tried renstalling msi 3 times but the voltage will still reset to 1.063,anybody know why these cards are overvolting themselves because its giving me quite high temps,i hope i dont have to rma them