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What is PCI Express Link State Power Management?

post #1 of 5
Thread Starter 
Will someone please explain what PCI Express Link State Power Management is used for.

The setting is under Power Options in Windows 7. The options are Off, Moderate Power Saving, or Maximum Power Saving.

Is there any reason to enable this? Will I save power without compromising performance? Will I piss off my graphics cards?

Thank You.
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post #2 of 5
It would only kick in at idle. But i have no idea WTH it is biggrin.gif
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post #3 of 5
It is part of the ASPM. I am pretty certain it is used to conform the OS to use the PCIe bus in laptops more efficiently.
http://msdn.microsoft.com/en-us/windows/hardware/gg462958
Edited by PhillyOverclocker - 5/21/11 at 2:51pm
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post #4 of 5
Keep it off. With it on my GTX 580 used to suddenly black out.
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post #5 of 5
Pointless to use except on laptops.
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Overclock.net › Forums › Software, Programming and Coding › Operating Systems › What is PCI Express Link State Power Management?