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throttlestop dead on windows 11

unclewebb

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@TwistedAndy

Have you done a BIOS update or a Windows update recently? If you have updated the BIOS then I would try to find and install the previous BIOS version.

I do not know what the latest trick Intel or Microsoft are using to disable CPU voltage control. Without access to the full Intel documentation and without any 12th Gen or newer hardware, I cannot come up with a fix for this problem.

Try using Intel XTU. Maybe it has a magic setting that can unlock CPU voltage control.
 

TwistedAndy

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Thank you! I have found a temporary workaround by rolling back BIOS to 1.11.0. Now it works again :)

I'm not completely sure if it is an issue with the BIOS by itself or some problems between my Windows setup and the BIOS. Anyway, I've created a thread on the Dell Support forum. Hope, they will fix that in the future BIOS updates.
 
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Can you disable the virtualization protection inside the exploit settings on the per app settings?

Just randomly changing OS wide settings like virtualisation blindly for this is a bit heavy handed.
 

TwistedAndy

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Here's a quick update. Another person has updated the BIOS to 1.13.1 and had the same issues with undervolting. It looks like an issue with the new BIOS firmware.

Can you disable the virtualization protection inside the exploit settings on the per app settings?

Just randomly changing OS wide settings like virtualisation blindly for this is a bit heavy handed.

There are no issues with virtualization by itself, it does not directly affect the undervolting tweaks. Usually, those problems are related to things like VBS preventing changing some memory areas.
 
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Here's a quick update. Another person has updated the BIOS to 1.13.1 and had the same issues with undervolting. It looks like an issue with the new BIOS firmware.



There are no issues with virtualization by itself, it does not directly affect the undervolting tweaks. Usually, those problems are related to things like VBS preventing changing some memory areas.
VBS is virtualization.
 
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VBS is the Virtualization Based Security. It's not the virtualization support. If you disable VBS, other apps and features still can use virtualization.
Wow its so easy to be misinterpreted.

Ok in dummy speak, VBS uses virtualization to function.
 
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Unfortunately, it looks like Intel has released the new microcode update, which blocks undervolting on 12th and 13th gen CPUs. Here's an article: Intel blocks undervolting on Alder and Raptor Lake
Theres an update to that reddit link. Intel leaving UV blocking as an option for motherboard vendors to implement. Tbh, I doubt many mobo vendors would want to gimp their boards and watch their sales plummet.
 
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incorrect.png


Edit: appears there is more to the story:
https://www.reddit.com/r/intel/comments/10slejm
 
Last edited:

mrUlugbek

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Hello guys.
Any news regarding undervolt on Windows 11 with WSL, VBS , HYPER-V?
Microsoft developers changing or not anybody knows?
 

mrUlugbek

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unclewebb

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how check it undervolted or not?
When VBS is enabled, I think all monitoring software is blocked from reading voltages from the voltage control register.

You will have to test indirectly. Run a consistent stress test like Cinebench or the TS Bench test and see what temperature you CPU gets to with no undervolt compared to with an undervolt. The temperature should be lower if your undervolt is working.
 

mrUlugbek

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Ok compiled Powermonkey for core i7950H

Core -250
Cache - 125

pk->planes[IACORE].OffsetVolts = -250;
pk->planes[RING].OffsetVolts = -125;


Is it normal bench?

1678142026594.png
 

unclewebb

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That R23 score looks normal for a 9750H.


Do you get better Cinebench scores or better CPU temperatures when you undervolt compared to when you do not undervolt?

That is how to test.
 

mrUlugbek

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That R23 score looks normal for a 9750H.


Do you get better Cinebench scores or better CPU temperatures when you undervolt compared to when you do not undervolt?

That is how to test.
Yes without boot Powermonkey
my score 6500-6600 but CPU temp around 77-80 c CPU clock first time 3900mhz but after powerlimit 3100 - 3200
power package showed 45w

But I read one minus of Powermonkey
After Sleep Windows 11 all changes override is it right?
 
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@unclewebb
Stupid question: launching TS as SYSTEM/NT TRUSTEDINSTALLER obviously wouldn't get around the problem, would it?
Thanks
 
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Mmmh, first tests are encouraging... but we need more testing to be sure:
Without (= running as simple Admin as usual):

With (= running as SYSTEM thanks to PoweRun by Sordum):
 
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... as far as I can understand from previous messages, Offsets show always 0, or should they report actual numbers if working as SYSTEM?
 

unclewebb

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The FIVR monitoring table shows 0.3799 from top to bottom. ThrottleStop is being blocked from accessing the voltage control register.
 
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