Quote Originally Posted by 3oh6 View Post

dedication or stupidity...the jury is out on that one. and yeah, low VTT limit of 1.425v i am sure is the deciding factor in the low uncore of this chip. but keep in mind, temps are only -30C at coldest at the evap so the uncore isn't "terrible", but still not good by any stretch.
yes it's most likely the VTT volts. The temps you are running should not stop you doing 4.8GHz uncore if the CPU/board/bios/RAM combo is capable of it.

i know others that have chips that absolutely hate VTT so it might be just bad luck with that chip