Hi guys...yesterday i had read the vmch with multimeter on the motherboard and i read this:

Bios ------ Tester
1,25v ---- 1,55v
1,40v ---- 1,40v
1,55v ---- 1,55v
1,70v ---- 1,70v

There is a bug on vmch setting, the minimum vmch is 1,4v

Sorry for my english