Hello, I've been running my i5 2500k at 4.2 GHZ for a year or so, using turbo boost and setting 'auto' in core voltage (1.28v was the auto setting, which I think it's not too bad). I wanted to extract a little bit more now that it's getting a little bit old so I tried putting the turbo boost at 4.5 GHZ and every other setting untouched. It crashed while starting windows. I tried manually changing the core voltage and I was able to get to Windows at 1.312v. I didn't perform any stress test to see if it was stable because I want to know, first, if it's possible to have the voltage to go down when idle, because if I set it up manually it stays at 1.312 at all times. I have a MSI P67A-GD65 as MB, if it helps. So my questions are; is there a way to lower that voltage at idle? (it usually goes down to 0.96v in auto). Are those voltages safe for the CPU? Would having 1.312v constantly damage the CPU? Regards.