[SOLVED] CPU stuck at base clock speeds

Jun 13, 2021
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Hi there!
I have a system running Windows 10 Pro (OS Build 19042.985 / version 20H2), With an Intel i7 9700K, 16GB of ram, and an Nvidia GeForce RTX 2080 Super.
I have no idea what is happening, but when ever I look at task manager, i see my CPU stuck at 3.60GHz. No variation, nothing. I used to be idling at around 4 GHz, but one day it just stopped changing.
I have no idea what caused this, or how to fix it.
Any help would be apreciated!
Thanks
unknown.png
 
Solution
Hi there!
I have a system running Windows 10 Pro (OS Build 19042.985 / version 20H2), With an Intel i7 9700K, 16GB of ram, and an Nvidia GeForce RTX 2080 Super.
I have no idea what is happening, but when ever I look at task manager, i see my CPU stuck at 3.60GHz. No variation, nothing. I used to be idling at around 4 GHz, but one day it just stopped changing.
I have no idea what caused this, or how to fix it.
Any help would be apreciated!
Thanks
unknown.png
For me with an i7-10750h, I noticed when changing the number of processors allowed in msconfig/boot/advanced options this depended on what my cpu clock speed would be, I can see from your...
it's usually Windows Power Plan causing these types of issues.

if it's set on High Performance,
try creating a custom plan with "Processor power management" parameters:
Minimum: 5%
System cooling: Active
Maximum: 100%

though if you've changed settings in the BIOS it can also affect C-States.
if Power Plan options don't fix the issue, reset BIOS to optimized defaults.
 
it's usually Windows Power Plan causing these types of issues.

if it's set on High Performance,
try creating a custom plan with "Processor power management" parameters:
Minimum: 5%
System cooling: Active
Maximum: 100%

though if you've changed settings in the BIOS it can also affect C-States.
if Power Plan options don't fix the issue, reset BIOS to optimized defaults.

Hi! Thanks for the quick reply,
I haven't got an option to change the "minimum" and "maximum" options you just listed,
see picture below I will try the bios reset later, supposed to be revising at the moment.
unknown.png
 
3.60 GHz is the default speed when Intel Turbo Boost is disabled.

https://ark.intel.com/content/www/u...9700k-processor-12m-cache-up-to-4-90-ghz.html

Is it possible that you disabled turbo boost in the BIOS?

When you are in the Windows High Performance power plan, open up a command window and copy and paste these two commands to set this power plan to its default settings. Copy and paste one command at a time.

Code:
powercfg -setacvalueindex SCHEME_MIN SUB_PROCESSOR PROCTHROTTLEMIN 100
powercfg -setacvalueindex SCHEME_MIN SUB_PROCESSOR PROCTHROTTLEMAX 100

For the Windows Balanced power plan, copy and paste these commands.

Code:
powercfg -setacvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMIN 5
powercfg -setacvalueindex SCHEME_BALANCED SUB_PROCESSOR PROCTHROTTLEMAX 100

Go into the Windows Power Options and switch power plans back and forth between Balanced and High Performance and see what happens to the MHz.
 
Hi there!
I have a system running Windows 10 Pro (OS Build 19042.985 / version 20H2), With an Intel i7 9700K, 16GB of ram, and an Nvidia GeForce RTX 2080 Super.
I have no idea what is happening, but when ever I look at task manager, i see my CPU stuck at 3.60GHz. No variation, nothing. I used to be idling at around 4 GHz, but one day it just stopped changing.
I have no idea what caused this, or how to fix it.
Any help would be apreciated!
Thanks
unknown.png
For me with an i7-10750h, I noticed when changing the number of processors allowed in msconfig/boot/advanced options this depended on what my cpu clock speed would be, I can see from your picture that you have 4 logical processors running in task manager try changing this number from 4 to 8 which should be the maximum for you cpu. This could have just been a coincidence for me but in my opinion it is worth a shot.
 
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Solution
For me with an i7-10750h, I noticed when changing the number of processors allowed in msconfig/boot/advanced options this depended on what my cpu clock speed would be, I can see from your picture that you have 4 logical processors running in task manager try changing this number from 4 to 8 which should be the maximum for you cpu. This could have just been a coincidence for me but in my opinion it is worth a shot.
Thanks man, you've sold my problem! I have also noticed only half my cores were showing up in tskmanager aswell, and now its fixed!
unknown.png
 
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