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E7440 Speedstep / Power Manager

Discussion in 'Dell Latitude, Vostro, and Precision' started by MatzeXXX, Mar 10, 2015.

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  1. MatzeXXX

    MatzeXXX Notebook Consultant

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    Hi there,

    yesterday I found out something interesting. Because of the fan spinning most of the time I decided to install Dell Command | Power Manager 2.0. It didn't help at all, but suddenly my CPU was throttled to 2096 MHz (whereas under normal circumstances it can go up to over 3GHz) and would never ever go higher, and only rarely much lower. To me it looked like this whole Speedstep/TurboBoost behaviour was altered.

    The shocking thing was, even after I uninstalled Power Manager it would show this new behaviour. For a laugh I started a 3D game I played recently, and of course now it was unusable. The framerate with the settings I always used wasn't much more than 5fps.

    I tried to reset the power plans in Windows, I even installed the older 1.1 version of Power Manager to see if this resets things, but to no avail. So I did the only thing I came up with: reinstall Windows. And of course now everything is back to normal. Frustrating though to realize this one little tool can mess up like that. I will stay far away from Power Manager.

    Anyone else made an observation like that?

    Deets: E7440 with Windows 7 64Bit, i7-4600u CPU, 16GB memory
     
    MatzeXXX, Mar 10, 2015
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