Some random code to play around with various pieces of power management (CPU undervolting, thermal management, etc.)
You absolutely, positively, definitely should not run this on any computer anywhere in its current state. This reads and sets CPU MSRs with reckless abandon and could reduce any computer to a smoldering heap of metal, plastic, and failed dreams.
The temperature and TDP wattage is well-documented from Intel, so that was a straightforward application. The voltage offset application stuff is another matter entirely; there's really not much work out there.
I found these two projects exceptionally helpful:
Particularly, I've taken some test cases and logic from George Whewell's repo as he's put a ton of work into this problem.