Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261186AbUCHUrA (ORCPT ); Mon, 8 Mar 2004 15:47:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261219AbUCHUrA (ORCPT ); Mon, 8 Mar 2004 15:47:00 -0500 Received: from dragnfire.mtl.istop.com ([66.11.160.179]:38597 "EHLO dsl.commfireservices.com") by vger.kernel.org with ESMTP id S261186AbUCHUq5 (ORCPT ); Mon, 8 Mar 2004 15:46:57 -0500 Date: Mon, 8 Mar 2004 15:46:53 -0500 (EST) From: Zwane Mwaikambo To: Bjoern Schmidt Cc: linux-kernel@vger.kernel.org Subject: Re: fsb of older cpu In-Reply-To: <404CD4E7.5050105@uni-paderborn.de> Message-ID: References: <404C4D32.1080609@uni-paderborn.de> <200403081714.04182.bernd.schubert@pci.uni-heidelberg.de> <404CD4E7.5050105@uni-paderborn.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 813 Lines: 17 On Mon, 8 Mar 2004, Bjoern Schmidt wrote: > Hello and thank you for your answer. I determined that this cpu has a fsb of > 66MHz. The reason for my question was that i want to underclock the cpu. > I think it would be better to change the multiplier instead of changing the fsb. > Therefore i read the msr register 0x02ah, tilted bit 27 and wrote it back, but > the cpu clock is still the same. Why does that not work? Is it possible to > change the multiplier at runtime at all? No, the multiplier is locked, you'll have more luck fiddling with the front side bus. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/