hmm 1.31v boot 5g should mean its stable 32m, but if it isnt it might be uncore / memory? maybe one of the cores are wonky, try 1 core? Sure it could totally still be 6.4 pifast chip
this error has happened to me too before. i've managed to get it back by bios flash and messing around with memories but ive read online of people who never got it back, lets hope you do.
If all else fails turn your screen up side down to get x63 back
awesome thanks Roman!
Yea it's like sandybridge combined with ivybridge,
need to find good ln2 batch like Ivy, then buy randomly in that batch to find totally random lucky chip like sandy.