I have been oc'ing processors for years but have not attempted a GPU yet. I have recently just WC my pc and am wanting toOC my 580. I was curious on how long people stresstest using EVGA oc Scanner X for ? I am at 1100mV ( core voltage )m 850 core clock speed, 1700 shader clock and 2100 memory clock. Any help would be great thanks a ton.