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Lowering power consumption on Opteron
(lemmy.world)
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this post was submitted on 22 Aug 2025
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I dunno about Linux, but on Windows I used to use something called K10stat to manually undervolt cores with no access to such via the BIOS. The difference was night and day dramatic, as they idled ridiculously fast and AMD left a ton of voltage headroom back then.
I bet there’s some Linux software to do it. Look up if anyone used voltage control software for desktop Phenom IIs and such.
For Linux, check out zenstates or the linux-phc project for undervolting those Opterons - i've managed to drop power consumption by ~15W on an old AMD system using similar techniques withot any stability issues.