From owner-freebsd-mobile@FreeBSD.ORG Thu Jan 13 11:56:02 2005 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 03A5016A4CE; Thu, 13 Jan 2005 11:56:02 +0000 (GMT) Received: from poup.poupinou.org (poup.poupinou.org [195.101.94.96]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8819A43D2D; Thu, 13 Jan 2005 11:56:01 +0000 (GMT) (envelope-from ducrot@poupinou.org) Received: from ducrot by poup.poupinou.org with local (Exim) id 1Cp3a4-0007WJ-00; Thu, 13 Jan 2005 12:56:00 +0100 Date: Thu, 13 Jan 2005 12:56:00 +0100 To: freebsd-hardware@freebsd.org Message-ID: <20050113115600.GP19199@poupinou.org> References: <20050113100503.GA1060@kyuzo.dunkelkammer.void> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050113100503.GA1060@kyuzo.dunkelkammer.void> User-Agent: Mutt/1.5.5.1+cvs20040105i From: Bruno Ducrot cc: freebsd-acpi@freebsd.org cc: freebsd-mobile@freebsd.org Subject: Re: Athlon XP-M/PowerNow for desktop system? X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Jan 2005 11:56:02 -0000 On Thu, Jan 13, 2005 at 11:05:03AM +0100, Stefan Walter wrote: > [Reply-To set to freebsd-hardware@ - please send answers to that list > only.] > > Hi, > > I'm currently thinking about replacing the Athlon 900 in my desktop > machine with a more recent CPU, and I'd be interested in getting one of > these Athlon XP-M "Low Power" CPUs. I think the mainboard - a MSI KT4AV-L > (MS-6712) with VIA's KT400A chipset - supports those CPUs, but I'm not > sure if I would be able to use their energy saving features with FreeBSD. > I know about the powernow_k7 module [1], but not enough to say if it > should work in this case or if there could be problems with desktop > mainboards. > Generally, for an ATX motherboard, you may be able to change the multiplier of the CPU but not the voltage, the latter requiring a VRM mobile part. If this is a concern, you should consider an ITX form but you have to be sure that one do have a VRM mobile part. Of course, you may consider another kind of CPU if you need ATX form (amd64 class, maybe sempron, if you want to stick with AMD, comes to mind). -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care.