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Topic # 56632 19-Jan-2010 15:32
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I have been looking into an issue that I found with our new laptop (Acer Aspire 1810TZ). I thought it was due to a software or hardware issue but have today discovered that we have two other machines in the office that have the same issue.

The issue is that even though the power options for the CPU are set to allow it to slow down it does not do so. The frequency on the three machines that have the issue does move but only between 80 odd percent and 100%.
Even if you set the upper and lower speed to say 5%-50% they still stay at the same 80+ %

On the other hand my work laptop which is now on Windows 7 does not have the issue.

I have restored the factory image to the Acer and the issue remained. I then installed clean installs of both Windows 7 and Vista and the issue remained.

What I am trying to work out is just how wide spread the problem is. So for those on Vista or Windows 7 can you please post with what OS you have and if you see the issue on your PC/Laptop.

Of course you need to have the power options for you CPU set to less then 100% to see if you have this issue. This setting is found under the link to Change advanced power options on the Power options page.

Then if you start Task Manager and click the performance tab there is a button to go into the resource monitor. From there you want to see what the Maximum Frequency percentage is doing. It should sit a bit higher then the CPU usage but follow the usage percentage. On my work PC it sits around 30 -40 % above the CPU usage.







Media centre PC - Case Silverstone LC16M with 2 X 80mm AcoustiFan DustPROOF, MOBO Gigabyte MA785GT-UD3H, CPU AMD X2 240 under volted, RAM 4 Gig DDR3 1033, HDD 120Gig System/512Gig data, Tuners 2 X Hauppauge HVR-3000, 1 X HVR-2200, Video Palit GT 220, Sound Realtek 886A HD (onboard), Optical LiteOn DH-401S Blue-ray using TotalMedia Theatre Power Corsair VX Series, 450W ATX PSU OS Windows 7 x64

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2584 posts

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  Reply # 291489 20-Jan-2010 13:33
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Well I can now sleep at night Wink

After reading the thread below I realised that speedstep IS working on my laptop. However it is somewhat limited as the CPU only has two steps available to it. 6 and 6.5 which means it can only slow down to 1.2Ghz from full speed of 1.3.

Not great news but at least now I understand what is going on.

http://forum.notebookreview.com/showthread.php?t=446641







Media centre PC - Case Silverstone LC16M with 2 X 80mm AcoustiFan DustPROOF, MOBO Gigabyte MA785GT-UD3H, CPU AMD X2 240 under volted, RAM 4 Gig DDR3 1033, HDD 120Gig System/512Gig data, Tuners 2 X Hauppauge HVR-3000, 1 X HVR-2200, Video Palit GT 220, Sound Realtek 886A HD (onboard), Optical LiteOn DH-401S Blue-ray using TotalMedia Theatre Power Corsair VX Series, 450W ATX PSU OS Windows 7 x64

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