From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roberto De Leo Subject: do Pentium4 & PentiumM consume about the same at their lowest possible freq? Date: Fri, 03 Aug 2007 18:56:53 +0200 Message-ID: <46B35E55.6080705@unica.it> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk Content-Type: text/plain; charset="us-ascii"; format="flowed" To: cpufreq@lists.linux.org.uk Hi all, I am not sure this is the right place where posing my question, if not please suggest me a better one! I come to the question. I happily used the speedstep kernel module with my centrino laptop and it really made a difference in terms of battery duration (actually now I have a celeron-m based laptop and the difference does not seem so evident, but I still have little statistic on it). Now I need to replace my main home 'desktop' PC and I am tempted to buy a PentiumM-based minit-itx MB (e.g. the AOpen i945GTt-VFA) in order to decrease the power bill (my PC is on 24/7), but since mini-itx MBs are quite expensive I'd prefer first to know the following: can the "Intel Pentium 4 clock modulation" kernel module (or maybe the "AMD Opteron/Athlon64 PowerNow!" one) bring the corresponding CPUs to consume as little as the "Intel Enhanced SpeedStep" does for a centrino? This info is quite important but I could not find it anywhere! Thanks, Roberto