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    Screen power draw monitor

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by MonsterMaxx, Sep 27, 2007.

  1. MonsterMaxx

    MonsterMaxx Notebook Evangelist

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    Is there any way to monitor the power the screen is drawing?


    I've been wondering if it takes more energy to display a white screen than it does a black screen.

    Like...would choosing a pure black background save any power.

    I doubt it makes any difference, but I'm sure curious.

    Suppose I could just fire up the lappy, turn off power mgt for the screen and time how long it lasts with a bright white screen and with a pure black one and see...
     
    MonsterMaxx, Sep 27, 2007
    #1
  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    I believe that the main power drain on an LCD panel is for the backlight and this uses the same power whether the display is black or white. Black just blocks more light coming through.

    However, if you want to measure the power drain then you can try running your notebook on battery and watching the battery power drain under different conditions. Various applications will report the battery power drain. I use RMClock because I already have it running.

    John
     
    John Ratsey, Sep 27, 2007
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  3. NotebookYoozer

    NotebookYoozer Notebook Evangelist

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    haha

    i hear this every once in a while

    it's 100% myth
     
    NotebookYoozer, Sep 27, 2007
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  4. leaftye

    leaftye Notebook Consultant

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    Hard to break those ties CRT's.....
     
    leaftye, Sep 27, 2007
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