Here is a nice thread (with further links) that anyone wanting to under-volt their notebook may be interesting in.
The cool thing is, you just close RMClock to disable the effect and get back full CPU power when needed.
I should add, the poster of the linked thread is claiming 24dC idle & 47dC full load running 24/7 Obviously that's with fan running- but keeping the fan off at semi-idle would be another application.
UnderVolting Penryns for <<< heat guide
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