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I just got a Surface Pro 4, and did all the latest updates (firmware updates and 1511).

I went into Power Options, created a "Power Saver" power plan, then went into advanced power options to adjust the processor power options (to limit it).

Unfortunately, they seem to have changed things around; I'm missing many of the advanced power options:

enter image description here enter image description here

Compared to my Surface Pro 2 (also running 1511), I'm missing many options; most notably the "Processor Power Management" options. You can see a sample here.

Does anyone know how to get these options back? I'd like to be able to limit the processor when I activate the Power Saver plan.

Unfortunately, I didn't check if I had these options prior to updating.

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Carcigenicate
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  • I also miss them for my Atom based Win8.1 tablet. seams to be related to chipset drivers. Does your Surface have the fanless Core M cpu? – magicandre1981 Dec 25 '15 at 07:42
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    @magicandre1981 Do these devices support InstantGo/Connected Standby/Modern Standby? See [this chat discussion](http://chat.stackexchange.com/transcript/message/26411681#26411681) and [this answer](http://superuser.com/a/1017646/337631) – DavidPostill Dec 25 '15 at 10:20
  • @DavidPostill oh crap. It's an M3 core which Ive never had before. I never even thought that it might not be supported :/. – Carcigenicate Dec 25 '15 at 14:16
  • @DavidPostill mine is also a connectedstandby device and all seam to miss those advanced options – magicandre1981 Dec 25 '15 at 15:49

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If you apply a registry tweak described in blog Restore Maximum Power State to Surface Pro 4 from FrogBoy, a new process power management will be available that you can set to max CPU to 99% to prevent the CPU from going into Turbo mode.

This is what needs to be added to the registry, the download provides this in a so called .reg file:

Windows Registry Editor Version 5.00

; Adds the Max CPU % back to the processor setting in power settings.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\bc5038f7-23e0-4960-96da-33abaf5935ec]
"Attributes"=dword:00000002
rene
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Tweaker
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  • The matching "Minimum processor state" is found at `...\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\893dee8e-2bef-41e0-89c6-b55d0929964c`. I gave it the same treatment of Attributes=2. – nialsh Jul 23 '18 at 23:54