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    Current Processor Speed/Actual Speed on T400

    Discussion in 'Lenovo' started by hatboy, Jun 12, 2009.

  1. hatboy

    hatboy Notebook Enthusiast

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    I have a T400 and I notice that if the laptop is run on ac adapter alone the current processor speed is slow (1.60 GHz) (the actual speed is 2.40GHz). When the laptop is run on battery or batter + ac adapter the current speed is correct. Does anyone have this problem? Is it normal?
     
    hatboy, Jun 12, 2009
    #1
  2. JohnBe

    JohnBe Notebook Enthusiast

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    It's normal. If you want full power on battery, you have to change the settings in the power management. Under screensaver - power - Power Schemes. Set to Maximum performance, or under the same tab screen is Power Manger, you can change settings from there.
     
    JohnBe, Jun 12, 2009
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  3. MidnightSun

    MidnightSun Emodicon

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    You can change processor power saving features in the Power Manager (right-click on battery toolbar display). If the processor is set to Adaptive, then it will automatically downclock when not under much load to save power and generate less heat. If the processor is set to Power Saving, it will be capped at a lower clock I believe.

    In short, it's normal, and it's a good thing that it's downclocking.
     
    MidnightSun, Jun 12, 2009
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  4. hatboy

    hatboy Notebook Enthusiast

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    That's good to hear. Thank JohnBe. When the laptop run on battery the processor actually run on full speed at 2.40GHz. I would think is the the other way around.
     
    hatboy, Jun 12, 2009
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  5. MidnightSun

    MidnightSun Emodicon

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    It probably should be the other way around. Check the settings in Power Manager, perhaps they were accidentally swapped.
     
    MidnightSun, Jun 12, 2009
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