Date: Mon, 11 Oct 2004 18:00:02 +0100 From: Colin Percival <colin.percival@wadham.ox.ac.uk> To: Phillip Neumann <bob@sofsis.cl> Cc: freebsd-mobile@freebsd.org Subject: Re: SpeedStep suport under 5.3 Message-ID: <416ABC12.8050001@wadham.ox.ac.uk> In-Reply-To: <1097498774.1351.2.camel@localhost> References: <200410110636.i9B6ahIK062590@web2.zoznam.sk> <416A300B.60503@gmx.de> <20041011110657.A17916@unsane.co.uk> <1097498774.1351.2.camel@localhost>
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Phillip Neumann wrote: > El lun, 11-10-2004 a las 10:12, Vince Hoffman escribió: >>(11:06:38 </usr/ports/sysutils/est>) 0 $ more pkg-descr >>This is a driver for the Enhanced SpeedStep feature in Intel Pentium M >>processors. >> >>WWW: http://www.daemonology.net/freebsd-est/ > > Yes, it changes the CPU freq, but it does not change the voltages... so > the battery life gets no longer.. 8( It changes both the cpu frequency and voltage, following the official specs from Intel. If you're not seeing increased battery life, you're probably comparing against the battery life when your machine boots up on battery power -- many laptop BIOSes will set the processor to the minimum speed and voltage in such cases. Colin Percival
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