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Intel-undervolt: CPU undervolting and throttling configuration tool for Linux

(github.com)
132 points cl3misch | 2 comments | 17 Jun 24 22:44 UTC | HN request time: 0s | source
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voidbert ◴[18 Jun 24 00:20 UTC] No.40712750[source]▶
Please consider the risks of the following vulnerability before deciding whether or not to undervolt: https://plundervolt.com/
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rany_ ◴[18 Jun 24 00:31 UTC] No.40712818[source]▶
In all likelihood this tool does not work for most users, specifically in response to this vulnerability. If you're on the latest microcode, undervolting is no longer possible due to Intel's mitigation: https://www.intel.com/content/www/us/en/security-center/advi...
replies(1): >>40714772 #
1. gravescale ◴[18 Jun 24 06:49 UTC] No.40714772[source]▶
Which is a pity because my i7 Lenovo laptop is acoustically and thermally some kind of jet turbine in a case, because I was foolish enough to believe a review, and I really wish I could undervolt it so it can make it to lunchtime on a charge.
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2. rany_ ◴[23 Jun 24 13:37 UTC] No.40767386[source]▶
I was actually wrong about that, it turned out to be possible on my 11th gen Intel CPU but it was definitely not as easy as it should've been.

I used https://github.com/datasone/setup_var.efi to modify the UEFI variables. The README has all the info you'd need. It turns out that both a BIOS and microcode update is required to kill off this feature, and you could just configure the BIOS to not lock it.