Date: Thu, 16 Dec 2004 18:33:05 -0800 From: Colin Percival <colin.percival@wadham.ox.ac.uk> To: Phillip Neumann <bob@sofsis.cl>, freebsd-mobile@freebsd.org Cc: njl@freebsd.org Subject: Re: est, ich, cpufreq Message-ID: <41C24561.4030202@wadham.ox.ac.uk> In-Reply-To: <41C20009.3080302@sofsis.cl> References: <41C20009.3080302@sofsis.cl>
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Phillip Neumann wrote: > Im wondering whats the difference between est and ich? both softwares > has the same goals? Different hardware support. Enhanced Speedstep (aka. est) operates using processor and VRM support only, whereas the original speedstep (ich) uses chipset support. Other minor benefits of est over ich include having more frequencies available (typically 6 different frequencies, rather than 2), and having faster transition between modes (10 microseconds vs. several milliseconds IIRC). > when will be a release of cpufreq?.. I'm not sure, Nate (victim CC) is the one working on this, last I heard. > i understand, with it we can begin > to use our lappys for 4-5 housr without the power line? If you install the right driver (eg, ich or est) then you should get the improved battery life benefits which cpufreq would provide. Colin Percival
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