CPU Frequency II

November 15, 2003

Previously in this space I wrote about discovering that the Mac OS X 10.2.8 upgrade reset the value used for CPU frequency. In my case I lost about a 3rd of my overall speed.

By reseting the PMU I was able to get full horsepower again.

For a while.

It seems that rebooting the machine loses the correct PMU value. Nuts. So now, until I upgrade to Panther (maybe soon now) I have to reset the PMU every time I restart or reboot my Powerbook.

Panther here I come.

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Mark H. Nichols

I am a husband, cellist, code prole, nerd, technologist, and all around good guy living and working in fly-over country. You should follow me on Twitter.