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I have a truenas server running a poor fx-4300. How can I get it to draw less power? (alien.top)

submitted 10 months ago by sexpusa@alien.top to c/homelab@selfhosted.forum

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I think the cpu alone draws over 100w. Can I just lower the frequency? I would rather not buy another cpu. Unless there is a good low power am3+ one.

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[–] NaibofTabr@infosec.pub 1 points 10 months ago

Here is a discussion about undervolting an FX-4100 that you may find helpful.

Lowering the voltage will definitely reduce power consumption and heat, and possibly extend the life of the CPU. But at some point a low voltage will cause errors in the CPU operations which could corrupt data or make the system unstable. Lower it in small steps and do some testing. If you plan to underclock and undervolt, only change one at a time.