My plan was to keep my FX55 under or at 1.75 volts. So on my K8N Neo2 Platinum, I set 1.525 + 10%. This gives me 1.75 volts. In cpu-z, it fluctuates between 1.749 and 1.754. But occasionally it would go down to 1.739 and up to 1.783. Under load (super pi), the voltage goes up and fluctuates between 1.763 and 1.789. Is this normal for the voltage to rise under load. My A8V board didn't do this. The voltage actually went down on that board under load. I have an PCP&P 510 and all rails are rock solid.