6800 gt, i think overheating is causing the problems im having with the card, see'ing as i have 9 case fans. maybe the heatsink is a peice of crap or something :/
70 is really high if that is the temp you are getting on idle. but if thats under load then it sounds on the lower end. my 6800 gt overclocked to ultra speeds gets up to the low 80's under load and i have never experianced any problems.