I've spent some more time figuring this out and I have an idea of what I would like to do, but I have a couple questions as to if it will work.
I was looking at the different BIOS to modify the vcore, and you say "In addition, this value needs to be adjusted, not too far away:
8A 00 F1 FF FF FF F8 11" but I could only find this value in the 480 BIOS, and it wasn't in the official 580 BIOS or the BIOS you uploaded here for the MSI Gaming X. Where can I find it, or what is the changed value?
So next I'm going to try changing the powertune settings with PBE to see how it behaves (wattage/voltage) with different limits set.
Is it possible to write the official 580 GOP back over the BIOS you have provided here? I would like to do this because I prefer having secureboot/uefi turned on, and on some systems the graphics card may become incompatible.
Also, in the BIOS you uploaded, are the memory timings using uber mix, or are they set as stock?
Thank you for all you work, and help here!