I'm most likely guessing that the voltages you are using is under stock..?
Yeah, my voltages are all under the manufacturer suggested limits, if that is what you mean. I have been running stable at 3.6ghz now for a couple months on air cooling. I went higher, but it was running a little warmer than I wanted, plus the performance gains were negligible for me. I am mostly playing games or using photo/video editing software. All is good at 3.6!!