Solved Modifying advanced power plan settings using the registry

PerpetualCycle said:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\xxxxxxx]
"Attributes"=dword:00000002

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one last question...does this gets applied globally or to a specific power plan?

AsadAlrafidain said:

one last question...does this gets applied globally or to a specific power plan?

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Just checked it...it gets applied globally

PerpetualCycle said:

The way to do this is to set the "Attributes" for the setting you want from "1" to "2" in the registry. Then it will automagically reveal it in the power plan advanced power ssettings. like this:


View attachment 101650

This makes it a lot easier to change the settings:

View attachment 101656



Unfortunately on major updates, these get set back to defaults ( Attributes="1"), but not the actual settings. I keep a .reg file of these so I can easily recover them and make them visible in the power plan settings, eg:

Code:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\36687f9e-e3a5-4dbf-b1dc-15eb381c6863]
"Attributes"=dword:00000002

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\45bcc044-d885-43e2-8605-ee0ec6e96b59]
"Attributes"=dword:00000002

One registry setting you would want, by the description would be this:


View attachment 101655

All the power settings are under they key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00

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What do these two options do?
One is to limit the boost, and the other:?

intex said:

What do these two options do?
One is to limit the boost, and the other:?

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Not quite sure what your asking. There were just a couple of examples of 2 power options each whose key in the database is the long string of numbers.

Setting the attributes to 2 makes them visible as options in the Power options app under the "Processor power management" section as I explained in post #12 in this thread.

The two correspond to the two open ion the following screen shot:



They both deal with how windows requests resources from the processor to manage it's measured workload.

The first is a hint to windows on how much to favor power savings over performance. If you are on a laptop you would want a higher percentage to save power. If on a desktop a lower value to favor performance.

The second is a hint to how high the processor should boost when going from a low workload to a high workload state. The higher the percentage, the higher the core frequency boost, 100% means as high as possible.

There is only outdated documentation on these available to the public. Here is an old link that is particularly outdated:


When I first posted this I had a i9-10900K which did not have p-cores + e-cores. There are now values keys in the registry that differentiate these. Unfortunately it is not very well publicly documented anymore - as it is with all windows technical information nowdays.

@PerpetualCycle I'm curious to ask you, it appears to me that your settings is inclined to power savings, so why not use the power saver Plan?

AsadAlrafidain said:

@PerpetualCycle I'm curious to ask you, it appears to me that your settings is inclined to power savings, so why not use the power saver Plan?

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It is not inclined to power savings. It is the opposite - inclined to performance.

PerpetualCycle said:

It is not inclined to power savings. It is the opposite - inclined to performance.

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So how do your settings compare to high performance power plan?

powercfg /Qh >C:\PowerPlanSettingsHidden.txt

Do this for different power plans and find the differences.