topic CPU running at half speed in Mobile and Desktop Processors

CPU running at half speed

MorpKnight — Fri, 27 Nov 2020 11:46:39 GMT

So i have a Lenovo Ideapad 130-14IKB with Intel Core i5-8250U processor. In the middle of August i took my laptop to service center cause motherboard malfunction, and their repair my laptop. Since that it goes normal with no problem, until the end of September my processor just running at half speed. In intel said I5 8250U max speed at 3.4GHZ and now it stuck at 1.58GHZ. Where is the problem? Motherboard? Cooling? Processor? Or something? I'll put my SSU report

Re:CPU running at half speed

Sebastian_M_Intel — Sat, 28 Nov 2020 01:00:13 GMT

Hello MorpKnight,

Thank you for posting on the Intel® communities.

Please follow these recommendations and let us know about the outcome:

1. Run the Intel® Processor Diagnostic Tool and send the results either in a screenshot or .txt file. To save the report, once the test is done, click on "File >> View Results File" and attach the .txt file to your reply.

2. Run the Intel® Processor Identification Utility and send the report either in a screenshot or .txt file. Follow the instructions here.

3. Within the Operating System (OS), Check that the power settings for the CPU are high:

Go to Power and Sleep Settings > Additional Power Settings > Change Plan Settings > Change Advanced Plan Setting > Processor Power Management. And set the CPU to maximum performance.

4. I can see that on your system's manufacturer (OEM) website there is a new BIOS update. Check with the OEM for installation steps and update the BIOS to the latest version: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/100-series/130-14ikb/downloads/driver-list/component?name=BIOS%2FUEFI

5. Also within the BIOS, check the settings to check if perhaps Intel® Turbo Boost Technology is disabled and/or Intel SpeedStep® Technology is enabled. Our recommendation is to use the BIOS default settings, so you will also need to check with the OEM how to change the values in the BIOS.

Regards,

Sebastian M

Intel Customer Support Technician

Links to third-party sites and references to third-party trademarks are provided for convenience and illustrative purposes only. Unless explicitly stated, Intel® is not responsible for the contents of such links, and no third-party endorsement of Intel or any of its products is implied.

Re: Re:CPU running at half speed

MorpKnight — Wed, 02 Dec 2020 08:49:18 GMT

So this is my result, and here i put my task manager screenshot that taken while i do the dianostic. By the way. i've put the CPU workload in OS to High Performance and i didnt find Intel setting in BIOS. If u can, can tell me how to go deeper to BIOS?

Re:CPU running at half speed

Sebastian_M_Intel — Thu, 03 Dec 2020 00:18:26 GMT

Hello MorpKnight,

Thank you for the information.

I would like to clarify that processors do not run at their maximum frequency all the time. The processor automatically selects the best frequency depending on the workload demand. However, in this case the CPU is running at base frequency, that is the reason why it seems to be that the Turbo Boost was disabled; in order for you to check the BIOS settings of your system, you need to check with the OEM (Lenovo) for further help.

The Intel® Processor Diagnostic Tool shows the CPU is working fine with no errors detected, can you also please provide the reported speed by the Intel® Processor Identification Utility? You can send the report either in a screenshot or .txt file following the instructions here.

Regards,

Sebastian M

Intel Customer Support Technician

Re: Re:CPU running at half speed

MorpKnight — Thu, 03 Dec 2020 12:38:14 GMT

Here i provide my report file of Intel processor Identify. it shows 1.6GHz, when doing heavy task, and provide 3.4GHz when doing light task. I still confuse why my system make the speed of CPU lower when doing heavy task like playing games, i play Genshin Impact and R6 and it run at 1.6GHz

Re:CPU running at half speed

Sebastian_M_Intel — Thu, 03 Dec 2020 21:18:21 GMT

Hello MorpKnight,

Thank you for your reply.

There may be several factors that can be causing this problem. We already covered some of them like the OS Power Management, the BIOS update and BIOS default settings, test the CPU with our tool, and so on.

Based on what we have done, one of the remaining factors can be your OS a little bit more as you mentioned that with "light" tasks it works:

Check OS updates to make sure there are no missing updates to install in your system: https://support.microsoft.com/en-us/windows/update-windows-10-3c5ae7fc-9fb6-9af1-1984-b5e0412c556a#:~:text=In%20Windows%2010%2C%20you%20decide,Update%20%26%20Security%20%3E%20Windows%20Update%20
If there are no pending updates or that does not work, try doing a fresh reinstallation of the OS: https://www.microsoft.com/en-us/software-download/windows10startfresh
In the end, if the issue persists, you may need to contact the OEM as this may be a hardware issue inside your laptop.

Regards,

Sebastian M

Intel Customer Support Technician

Re: Re:CPU running at half speed

MorpKnight — Fri, 04 Dec 2020 12:19:32 GMT

Ok, thanks for your help

Re:CPU running at half speed

Sebastian_M_Intel — Fri, 04 Dec 2020 17:28:53 GMT

Hello MorpKnight,

Thanks for the update.

We will proceed to close this inquiry as it was marked as solved. If you have any additional questions, please submit a new thread and we will gladly assist you.

Regards,

Sebastian M

Intel Customer Support Technician

Re: Re:CPU running at half speed

Lramo — Tue, 18 Mar 2025 23:11:17 GMT

I am having the same issue, but a litle bit different.

My 11th Gen Intel® Core™ i5-1145G7 @ 2.60GHz suddenly stuck on the frequency of 1.5Ghz.

When I use stress tool of CPU-Z it wont go over 1.5ghz.

As you can see in the images below I put the results of CPU-Z test.

followed your suggestion but it did not work.

I have tried to turn of Turbo Boost and the variable speed at BIOS. Windows 11 Up to date. DELL drives up to date.