PCIe Link State Power Management - Turn On or Off in Windows

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    PCIe Link State Power Management - Turn On or Off in Windows

    PCIe Link State Power Management - Turn On or Off in Windows

    How to Turn On or Off PCIe Link State Power Management in Windows
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    Designer Media Ltd


    How to Turn On or Off PCIe Link State Power Management in Windows


       Information
    The Link State Power Management is a part of PCI Express Active State Power Management (ASPM). The link State of a PCIe Device is converted from L0 (on) to L1 (off) when the link is not transferring data. The hardware is automatically converted to L0 again when data is available to transfer across the link.

    There are basically 2 levels of power management in the PCI Express options. The difference between these 2 options are the power savings versus the Latency (Time to recover from the Sleep state).


    • If you select Off, there is no power savings, and the current will run regardless of what state the laptop is in. (depending on if your laptop is plugged in or not).
      • On battery: Off = PCI Express will communicate even when using battery power.
      • Plugged in: Off = PCI Express will communicate when plugged in as well.

    • If you select Moderate Power Savings, the power savings are less, but the time to recover from the Sleep state (latency) is much shorter.

    • If you select Maximum Power Savings, the power savings are greater, but the time to recover from the Sleep state (latency) is much longer.

    Sometimes this mechanism cause a bit trouble during power transitions, specially during sleep. So it may be wanted to turn the Link State Power Management off, if necessary.



    This tutorial will show you how to turn on or off the PCI Express Link State Power Management in Vista, Windows 7, and Windows 8.




    How to Do it:


    1. Open your advanced power plan settings in Vista/Windows 7 or Windows 8.

    2. Scroll down and expand PCI Express and Link State Power Management. (see screenshots under step 5)

    3. Do step 4 or 5 for what you would like to do.

    4. To Turn Off PCI Express Link State Power Management
    A) Under Setting (no battery) or On battery and Plugged in, open the drop down menu, select Off, and click/tap on OK.
    5. To Turn On PCI Express Link State Power Management
    A) Under Setting (no battery) or On battery and Plugged in, open the drop down menu, select either Moderate power savings or Maximum power savings for what you want, and click/tap on OK.
    PCIe Link State Power Management - Turn On or Off in Windows-advanced_power_options.jpg PCIe Link State Power Management - Turn On or Off in Windows-advanced_power_options-2.jpg









  1. Posts : 71,977
    64-bit Windows 11 Pro for Workstations
       #1

    Good tutorial Arc. :)
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  2. Posts : 15,026
    Windows 10 Home 64Bit
       #2

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  3. Arc
    Posts : 35,373
    Microsoft Windows 10 Pro Insider Preview 64-bit
    Thread Starter
       #3

    Brink said:
    Good tutorial Arc. :)
    Thanks for everything, Shawn
    koolkat77 said:
    And thanks for the inspiration :)
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  4. Posts : 19,383
    Windows 10 Pro x64 ; Xubuntu x64
       #4

    Nice work Arc
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  5. Arc
    Posts : 35,373
    Microsoft Windows 10 Pro Insider Preview 64-bit
    Thread Starter
       #5

    Thank you Golden :)
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  6.    #6

    Good Tutorial, I've noticed it now when you posted it in the thread :)
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  7. Posts : 2,014
    Windows 7 Professional 64bit
       #7

    Nice Tutorial Archie, just came across it now!
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  8. Arc
    Posts : 35,373
    Microsoft Windows 10 Pro Insider Preview 64-bit
    Thread Starter
       #8

    Northernsoul55 said:
    Nice Tutorial Archie, just came across it now!
    Thanks Dave :)

    I would be happy if you found it useful anytime :)
      My Computer


  9. Posts : 350
    Windows 7 Ultimate x64
       #9

    Nice tutorial archie :) a little more explanation about PCIe Link State Power Management in the information section of the tutorial would help user who are not aware of it, like me.
    In my desktop pc it is Moderate power savings so should i change it to maximum cause TDP of my card is 188W. Would it help save energy?
      My Computer


 
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