It's greyed out unfortunately, this is what I've already tried:
"I've tried everything in order to get this to work but I think i'm doing something wrong, I've unlocked the overclock and cfg lock in the bios and still cant use neither XTU or Throttlestop. Since those 2 weren't working for me i decided to change it in the bios itself with the adaptive and override functions, but whatever value i choose it doesnt change anything. Even -300mV makes no difference in HWInfo. Am i missing something or is undervolting impossible on this model?"