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    Windows XP Power Management Questions

    Discussion in 'Windows OS and Software' started by Lencias, Aug 17, 2008.

  1. Lencias

    Lencias Notebook Consultant

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    Hi,
    Do the Portable/Laptop, Max Battery, Minimal Power Management, etc. settings in Windows XP's power options control anything besides monitor/HD turn off and standby delay on laptops? Does it control like CPU throttling, etc, you just don't see it? I've heard the different settings control how fast the CPU runs and when, but... :\
     
    Lencias, Aug 17, 2008
    #1
  2. S.SubZero

    S.SubZero Notebook Deity

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    Yes, yes they do.
     
    S.SubZero, Aug 17, 2008
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  3. qhn

    qhn Notebook User

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    Only if appropriated processor drivers, if available, are being installed. Enhanced Speed Step for Intel, and AMD PowerNow for AMD ...

    XP SP3 includes a patch (KB896256) that fixes the problems of handling ACPI processor performance states on multi CPU computers. You might want to take a look at that if you are still on SP2

    cheers ...
     
    qhn, Aug 18, 2008
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  4. Lencias

    Lencias Notebook Consultant

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    Don't XP and Vista have the SpeedStep drivers built in?

    If not, where can I find them?

    Is SpeedStep enabled by the Portable/Laptop profile or the Minimal Power Management profile?
     
    Lencias, Aug 18, 2008
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  5. qhn

    qhn Notebook User

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    yes, if the manufacturers submit them to microsoft

    Processor support sites (Intel, AMD ..)

    any profiles relating to saving/extending battery life, will take advantage of the speedstep/cpu throttling functionalities, when available

    cheers ...
     
    qhn, Aug 19, 2008
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  6. namaiki

    namaiki "basically rocks" Super Moderator

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    Here is an article regarding processor behaviour as controlled by the power schemes built into Windows XP
     
    namaiki, Aug 19, 2008
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