Always funny reading your threads gotvoltage.
Here my NB degraded abit after I ran her at >1.6V. Did 2.5GHz at 1.55V and 2.4 at 1.45V before now no way to get 2.4GHz stable at 1.55V.
On the AsRock 790GX the board seemed to overvolt alot, saw 1.8V with 1.65V in bios. I tested with an DMM and it was ~1.69V. Max I could apply before the board started to power off at save 3.3GHz was 1.6V on the AsRock790GX and 1.65V on the GBT790GX.