CPU Frequency

November 08, 2003

Thanks to Matt Haughey, Leonard Lin, and this Apple document my Powerbook G4 (867 MHz) is once again running at 867 MHz.

I just last evening upgraded to 10.2.8 figuring that all the quirks have been flattened by now. Silly me. Less than 24 hours later I read that 10.2.8 may have reset my cpu frequency to a figure 2/3rds of its rated speed.

Running the sysctl hw.cpufrequency command in the Terminal I discovered to my dismay that my CPU was running at a mere 667 MHz. Following Apple's directions I reset my PMU and restarted my machine. Once again I am running at a full 867 MHz.

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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.