topic Windows 10. Why does 12600k park so many cores? Cores are not fully hyperthreaded in Mobile and Desktop Processors

Windows 10. Why does 12600k park so many cores? Cores are not fully hyperthreaded

pman62 — Fri, 26 Nov 2021 22:19:24 GMT

using Windows 10.

under normal usage, the cpu is not hyperthreading properly

or is this expected behavior?

If i disable the e-cores on the 12600k, all p-cores are fully utilized. I have 12 hyperthread cores.

if I leave e-cores enabled, I virtually have only 10 cores.... 6-non-ht p-cores, and 4 ecores.

it looks as though hyperthreading is effectively disabled when the e-cores are used.

See my task manager.... See those 6 parked logical processors?

what's going on here?

When e-cores are disabled, hyperthreading returns to normal...

Re:Windows 10. Why does 12600k park so many cores? Cores are not fully hyperthreaded

David_G_Intel — Mon, 29 Nov 2021 23:05:59 GMT

Hello pman62

Thank you for posting on the Intel️® communities. To investigate this, please share with us the following:

Motherboard model and BIOS version
Windows version and build
Intel® System Support Utility (Intel® SSU) results
- Download the Intel SSU https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows-
- Open the application and select "Everything" click on "Scan" to see the system and device information. By default, Intel® SSU will take you to the "Summary View".
- Click on the menu where it says "Summary" to change to "Detailed View".
- To save your scan, click on "Next", then "Save".

Regards,

David G

Intel Customer Support Technician

Re:Windows 10. Why does 12600k park so many cores? Cores are not fully hyperthreaded

David_G_Intel — Thu, 02 Dec 2021 19:05:53 GMT

Were you able to check the previous post?

Let us know if you still need assistance.

Best regards,

David G.

Intel Customer Support Technician

Re:Windows 10. Why does 12600k park so many cores? Cores are not fully hyperthreaded

David_G_Intel — Mon, 06 Dec 2021 18:18:37 GMT

We have not heard back from you, so we will close this thread. If you need any additional information, please submit a new question as this thread will no longer be monitored.

Best regards,

David G.

Intel Customer Support Technician