Flashed the '880c950m' bios only (visible) differences:

Vcore 2D= 1.10 (up from 1.00)
Vcore 3D= 1.30 (up from 1.20)

I'm on water, so not so consernd.

Testing in progress - starting point 870 (max stable on 1.20). should hit 900+ if the heat don't get me