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

(github.com)
132 points cl3misch | 1 comments | 17 Jun 24 22:44 UTC | HN request time: 0.356s | source
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hu3 ◴[18 Jun 24 14:26 UTC] No.40718245[source]▶
I slightly undervolted an i7 11800H by -100mV.

That resulted in a -10C average CPU temperature. Massive!

I don't remember last time I heard the fans. Not even with Docker + Jetbrains IDEs.

I wonder why doesn't it come like this by default. It runs faster too because it's no longer frequently thermal throttled.

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atVelocet ◴[18 Jun 24 15:00 UTC] No.40718594[source]▶
Cause the CPU can get unstable under certain loads. So Intel plays it safe and ramps up the voltage. And no.. there is no easy way to measure this. Also every CPU is slightly different.
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1. StrangeDoctor ◴[18 Jun 24 15:10 UTC] No.40718698[source]▶
I ultimately gave up playing this game, spent hours testing and tuning. Each core is slightly different (on amd, I’m sure intel has something similar) and stress test for 1-24h each tweak invoking a reboot. Then some new workload comes and kernel panic/bsod.

Stock settings just work, maybe I lost the silicon lottery but too tired to check anymore.