From owner-freebsd-ppc@FreeBSD.ORG  Thu Jul 19 13:31:11 2012
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Date: Thu, 19 Jul 2012 15:31:08 +0200
From: Fabian Wenk <fabian@wenks.ch>
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Subject: Re: iBook G4 - wrong CPU speed?
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Hello Torfinn

On 19.07.2012 13:55, Torfinn Ingolfsen wrote:
> I just upgraded my iBook G4[1] to FreeBSD 9.1-prerelease.
>
> Before the upgrade, dmesg showed this for the CPU:
> cpu0: Motorola PowerPC 7447A revision 1.5, 713.92 MHz

> And after the upgrade, it still shows this:
> cpu0: Motorola PowerPC 7447A revision 1.5, 713.92 MHz

> But the CPU in this thing is supposedly running at 1.42 GHz,
> so why is it showing the wrong speed?
> Details, dmesg output and more at the FreeBSD page for this
> machine[2].

This is probably a problem of the hardware itself and not caused 
by FreeBSD. As far as I know, Macs reduce the CPU speed, e.g. if 
the cooling is not working properly, but continue to run. 
Something could be blocking the fan, or the fan has failed.


bye
Fabian