From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262496AbUJ0P5X (ORCPT ); Wed, 27 Oct 2004 11:57:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262495AbUJ0P5W (ORCPT ); Wed, 27 Oct 2004 11:57:22 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:32661 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S262468AbUJ0P42 (ORCPT ); Wed, 27 Oct 2004 11:56:28 -0400 Subject: Re: [PATCH] Add p4-clockmod driver in x86-64 From: Lee Revell To: Paulo Marques Cc: "Pallipadi, Venkatesh" , Andi Kleen , akpm@osdl.org, linux-kernel@vger.kernel.org In-Reply-To: <417FB7BA.9050005@grupopie.com> References: <88056F38E9E48644A0F562A38C64FB600333A69D@scsmsx403.amr.corp.intel.com> <417FB7BA.9050005@grupopie.com> Content-Type: text/plain Date: Wed, 27 Oct 2004 11:56:27 -0400 Message-Id: <1098892587.8313.5.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2004-10-27 at 15:59 +0100, Paulo Marques wrote: > I am one of the members of the robotic soccer team from the University > of Oporto, and a couple of months ago we were looking for new > motherboards for our robots, because we are starting to need new > hardware (on-board lan, usb2.0, etc.). > > We really don't need excepcional performance, but we really, really need > low power consumption, so lowering the clock on a standard mainboard > seemed to be the best cost/performance scenario. > > Could this driver be used to keep a standard p4 processor at say 25% > clock speed at all times? > Why don't you try the VIA EPIA mini-ITX boards? These are designed for low power applications like yours. I am running the M-6000 which has a fanless 600Mhz C3 processor, the newer fanless models run at 1Ghz. And, on top of that they support speed scaling so you can slow it down even more. Lee