Can I reduce the CPU speed of my MacBook when on battery?

Posted by Greg Hewgill on Super User See other posts from Super User or by Greg Hewgill
Published on 2009-07-19T03:02:11Z Indexed on 2010/03/18 8:41 UTC
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macbook

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battery-life

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cpu-speed

I've got a MacBook with a Core 2 Duo CPU. I've got CoreDuoTemp installed which can show the current speed of the CPU. It appears to always show:

Mini : 1.0 GHz
Maxi : 2.0 GHz
Current : 2.0 GHz

I believe my laptop would run longer on battery if it were to run at a maximum of 1 GHz. Is there a way to configure this, or is the CPU speed adjustment completely automatic?

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