like Blue said, use HwInfo64 to check temps (CORE and VRMS) . . .
scroll down to see vrms. keep them below 80C. btw, if you have rev2, most likely you do, the voltages are locked and with any more oc you need to go higher in volts but can't. not sure if you can up the volts just a tiny bit . . . like 1.27mv? however, your temp atm is already at 70. up the fan speed to about 55 - 60%.
Edited by rdr09 - 6/1/13 at 12:00pm