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From: Jung-uk Kim <jkim@FreeBSD.org>
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Cc: Volker Stolz <vs@FreeBSD.org>, Graham North <northg@shaw.ca>
Subject: Re: Cool 'n quiet and other AMD stuff
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On Tuesday 04 October 2005 11:40 am, Volker Stolz wrote:
> * Graham North <northg@shaw.ca>:
> > 1)  Is the AMD Cool 'n quiet feature (PowerNow) feature supported
> > while running i386 FBSD on this AMD64 processor? (Assuming MB
> > support).
>
> Maybe this will work: http://www.freshports.org/sysutils/fvcool/

I believe cpufreq.ko and powerd(8) will work just fine but it's not 
available in FreeBSD 5.4.  From 6.0-BETA (or RELENG_5), try 'kldload 
cpufreq' and add 'powerd_enable="YES"' in /etc/rc.conf.

Jung-uk Kim