Has anyone used intel-undervolt in dom0?
To prolong battery life and get better CPU performance.
Particularly curious on Heads or Coreboot / Librebooted machines.
Does it play nice with Xen / Qubes?
It won’t work (yet) on newer hardware: Implement undervolting for NC laptops · Issue #1665 · Dasharo/dasharo-issues · GitHub
Thanks, from that link I saw this as useful:
Apparently undervolting was deprecated due to vulnerabilities like Plundervolt that targeted Intel SGX. SGX is no longer part of current Intel-Core-CPUs though.
Also, from what I’ve been told Undervolting attacks seem to be reliant on the ability to change them at runtime. Setting a fixed voltage offset in the firmware should therefore not be an issue.
I will have to try the Honeywell PTM7950 to see if it can stop my over-heating / throttling problem then.
It’s most probably going to make a sizeable difference. My experience with them, when properly applied, has been really positive.
Also, adding a 
reaction in the linked Github issue can help Dasharo maintainers gauge interest in features to include in the next release, so if you’re interested in undervolting support for this hardware, be sure to leave a reaction 
,
FWIW I have to say, Always good tips from you @Atrate btw. Appreciated.