This looks mighty inspiring, maybe ill switch back to smOS, undervolting was the one thing keeping me away

Would you care to share your clocks/volts too? Also by offset, you mean a hardcoded bios offset, right?
All GPU's are different and such results are not guaranteed. Most of my rigs are running at around 800 watts.
By offset yes I mean modifying bios and manually adding and offset (for some fee I can do that for interested parties).
Here are my settings for this one particular rig

Nice. So help me understand what the Bios offset is doing in this scenario since the core is already at 850mv?