Different clock frequencies on Intel Core i5-1235u

[rabbat_80]

I have a HP Pavilion 15 Laptop with a Core i5-1235u CPU. I recently booted into safe mode and i discovered my base speed was reading as 2.50ghz and the speed was stuck at a constant 2.50 ghz no matter what I did and even when utilization was at 0%. This isn't the case when I start Windows normally as task manager reports the correct base speed of 2.50ghz. However, the speed when I boot Windows normally doesn't go past 1.9ghz even on full load. I dual booted Windows 10 and 11 to see if the problem is with my install but then even on the Windows 10 install, task manager there reports the base speed of the CPU as 2.50ghz instead of 1.3ghz, but that does boost up to frequencies past 4.0ghz as expected. When I run an Intel SSU test in Windows 10, it shows CPU base frequency as 2.50 ghz however it shows up as 1.3ghz in Windows 11. I ran the Intel Processor Diagnostic Tool which shows a pass. I've tried changing the Intel PPM registry start value from 3 to 4 and to 1, uninstalling the Intel PPM drivers, performing a clean boot, reinstalling the Dynamic Tuning drivers from HP, tinkering with the power options and finally performing an in-place upgrade, all to no avail. I have attached the results from both tests conducted on Windows 10 and 11 environments on the Intel System Support Utility and the Intel Processor Identification Utility.

Please I need help as I really don't want to reinstall Windows 11

[AlfredoS_Intel]

Hi Rabbat_80,

Thank you for posting in Intel Communities.

I know that reinstalling Windows is a tedious process, so I will try to find a way.

Please allow me to ask the following questions:

1. Was there a time that your system is working fine, or was it like this from the start?

2. Please attach the logs of the IPDT software. You can find it by clicking on file then view log, then save the logs to a text file.

3. Have you tried to run stress tests or benchmarking software? If yes, what is the maximum frequency that you are getting?

4. What is your Windows power scheme? (Balanced, High Performance, Power Saving)

Awaiting your post.

Best Regards,

Alfred S

Intel® Customer Support Technician

[rabbat_80]

Hello, thanks for your reply

First, yes there was a time where my laptop was behaving normally. This behaviour started recently.

I've tried running stress tests using Cinebench 23.2 and I get speeds of about 1.70ghz at the beginning of the multi core tests before the speed reduces and evens out at around 1.2-1.3ghz. Normal usage never goes past 1.7ghz no matter what I'm doing. I've tried High Performance and the Balanced plan but there's no difference. I'll attach the logs from the IPDT tests.

Thanks

[AlfredoS_Intel]

Hi Rabbat_80,

I wanted to check if you had the chance to read the questions that we posted. Please let me know at your earliest convenience so that we can determine the best course of action to resolve this matter.

Best Regards,

Alfred S

Intel Customer Support Technician

[AlfredoS_Intel]

Hi Rabbat_80,

Thank you for your response.

Instructions from this article may help you with your concern, My Intel® Core™ Processor Does Not Reach the Maximum Turbo Boost Frequency.

Do you have an HP preinstalled software that also has power settings? If yes, change it als to high performance or disable it. You may want to check with HP on how to properly configure this.

We will wait for your reply.

Best Regards,

Alfred S

Intel® Customer Support Technician

[rabbat_80]

Hi, thanks for your response.

I've contacted HP and I was told that power management solutions/software are only offered on their business notebooks, which my laptop doesn't fall under. I was also told to reset my PC which is not really what I want to do unless I'm sure there's no other option.

I also checked the PL1 and PL2 limits with the Intel Extreme Tuning Utility. The PL1 power is set to 25 and the PL2 power is set to 51 with a turbo time of 28 seconds. It doesn't allow me to change these values. I've also reset my BIOS without any success and there's no such option as Turbo Boost in the BIOS. Is there anything else I could try, or a clean install of Windows is the only solution?

Thank you for your assistance

[AlfredoS_Intel]

Hi Rabbat_80,

Thank you checking our suggestion.

I understand why you do not want to reformat your system.

Based on the findings given to you by your laptop manufacturer, it seems that it may be the only viable solution.

You can try enabling Ultimate Performance Power Profile it if it can be activated on your system.  If that does not work, you need a BIOS or firmware solution from HP to make you modify PL1 and PL2 values.  Related to this, do you have a power profile option in BIOS or any power saving setting? If yes, you can explore with HP if modifying this settings will help you change the PL1 and PL2 values.  

Lastly, how about TDP do you have that setting in BIOS?

We will wait for your reply.

Best Regards,

Alfred S

Intel® Customer Support Technician

[rabbat_80]

Hello.

I've done a clean install and still nothing changed. My BIOS is completely barebones, never seen such in my life. Can virtually change nothing apart from secure boot and some other minor stuff.

The ultimate performance plan doesn't change anything. I however stumbled on something I'd like you to check out from hwinfo, which I've attached.

Thanks as always again for your responses

[AlfredoS_Intel]

Hi Dommo4,

Thank you for your response.

I think you found the configurable TDP information. Since reloading the Operating System still did not fix the issue, please reach out to HP to check if this is already a hardware issue or is there something that can be done to make these options available.

Best Regards,

Alfred S

Intel Customer Support Technician

[AlfredoS_Intel]

Hi Rabbat_80,

We are just following up.

It looks like you need more time to check with your system manufacturer since we have not heard from you. 

Should we not hear from you, our system may automatically close the thread.

Best Regards,

Alfred S

Intel Customer Support Technician

[AlfredoS_Intel]

Hi Rabbat_80,

We need to close this thread since we have not gotten a response from you: maybe because you are busy or preoccupied at the moment. 

We hope that our suggestion for you to coordinate with the manufacturer of your software directed you to a resolution for your concern.

We were waiting for your feedback since it is important for us to give you the right solution on your concern.

As much as we would like to continue assisting you, we need to close it to avoid overwhelming your inbox with notifications. 

We hope for your consideration and understanding on this one.

If you need any additional information, please submit a new question as this thread will no longer being monitored.

Thank you for contacting Intel® and have a great week!

Best Regards,

Alfred S

Intel Customer Support Technician