Date: Thu, 30 Dec 2004 10:12:28 -0800 From: John-Mark Gurney <gurney_j@resnet.uoregon.edu> To: Nicolas Blais <nb_root@videotron.ca> Cc: freebsd-amd64@freebsd.org Subject: Re: CPU speed not reported correctly Message-ID: <20041230181227.GR19624@funkthat.com> In-Reply-To: <200412301146.49669.nb_root@videotron.ca> References: <20041229212555.GD89526@gargantuan.com> <20041230140022.GC59271@gargantuan.com> <58083.207.219.213.163.1104418371.squirrel@207.219.213.163> <200412301146.49669.nb_root@videotron.ca>
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Nicolas Blais wrote this message on Thu, Dec 30, 2004 at 11:46 -0500: > This is because AMD uses PowerNOW! technology which changes the voltage > (therefore the speed) of the cpu for the load it gets. just for clarification, changed the voltage does not imply a change of the speed, it just means that at slower clock rates, it can reduce the voltage for the chip since the transistors don't need to switch as quickly.. > On December 30, 2004 09:52, Mike Jakubik wrote: > > Michael W. Oliver said: > > > When booting cold, the same speed is reported -- 801.83-MHz. Yes, this > > > is a laptop (Sager 4750-V). > > > > > > entire output of `dmesg -a': > > > http://michael.gargantuan.com/yabbse/index.php?action=dlattach;topic=309. > > >0;id=17 > > > > > > other info about this laptop: > > > http://michael.gargantuan.com/yabbse/index.php/board,44.0.html > > > > This is normal for AMD laptops. I have an Emachine M5310, and the CPU > > speed varies on it. If i right click on my computer in Windows XP, the > > reported frequency is almost always different. Strangely enough in FreeBSD > > its always the max though, i belive this technology may require a proper > > driver for the frequency to be adjusted. I would check your BIOS settings. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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