I’ve had multiple systems that crash or corrupt data when underclocked, so running at 90% might not be what you want.

You can always play with the CPU governor / disable high power states. That should be well-tested.

anonymars 4 days ago | parent | next [-]

It sounds like you are conflating undervolting for underclocking. Undervolting runs it out of spec, while underclocking simply runs it slower

▲

danieldk 4 days ago | parent | prev [-]

Setting a P-State max percentage is completely reliable/stable, it will clock lower on average to hit the lower performance target. It’s kinda similar to setting a powersave governor, but more granular.

I think you are confusing with undervolting.

	▲	hedora 2 days ago \| parent [-]
		No. For giggles, set your DRAM frequency (MT/sec) to something crazy low, then try using the machine for a week.