watch for whea errors in the event log, it can pass prime 95 but fail on applications, for my 3570 i was ok at 1.1V @ 4.3Ghz, in prime and ibt, but in bf3 i'd get whea errors, I see them as a precursor to bsods, which i got. Oddly empire: total war was far harsher than bf3 for those errors. If you get them bump the voltage up by 0.005 and you'll be ok.
Ok thank you I will do that if I start gettin errors. I am at 4.7GHz now vcore 1.33 temps right over 70c. No crashes thus far but is it safe to run at those voltages?