Windows 11 Pro WS core parking issues on Intel 3495x

rjs-sn 0 Reputation points

I've setup a new 3495x workstation. I'm seeing an odd behavior with windows 11 pro for workstations. With hyperthreading enabled the CPU reports 112 processors. However, windows 11 does not appear to park cores 65+. Cores 1-64 work as expected. This prevents the cpu from using Turbo 2/3 speeds.

Disabling HT reduces the core count windows sees to 56 and core parking works as expected and allows turbo to also work as expected. I've been unable to find a workaround to allow HT to be enabled without a big single threaded performance hit.

Has anyone else observed this or is a workaround known?

I've seen a lot of oddities with power management on this system. I've gone over Powercfg with a fine tooth comb, but was not able to solve the parking issue.

Windows Hardware Performance
Windows Hardware Performance
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.Hardware Performance: Delivering / providing hardware or hardware systems or adjusting / adapting hardware or hardware systems.
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Windows 11
Windows 11
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  1. Limitless Technology 44,101 Reputation points


    I'd be happy to help you out with your question. Sorry for the inconvenience caused.

    Please note that the following suggestions are based on best practices and general self troubleshooting steps for core parking issues in Windows:

    1. Update drivers and BIOS: Ensure that you have the latest drivers and BIOS installed for your Intel 3495x processor and the motherboard. Check the manufacturer's website for any available updates that may address compatibility or performance issues.
    2. Power plan settings: Make sure you're using a high-performance power plan in Windows 11 Pro. Adjust the advanced power settings to ensure that core parking is enabled and set to the desired behavior. You can access the power plan settings by right-clicking the battery or power icon in the system tray and selecting "Power Options."
    3. Windows Updates: Keep your system up to date with the latest Windows updates. Microsoft frequently releases updates that address various issues, including hardware compatibility and performance improvements.

    If the issue persists and you've exhausted all available options, I’ll recommend contacting Microsoft Technical Support, they can connect with you remotely, check what causing this issue and fix it for you, you can contact them here :-

    Please keep in mind that the suggestions provided here are general recommendations.

    If you have any other questions or need assistance with anything, please don't hesitate to let me know. I'm here to help.

    If the reply was helpful, please don’t forget to upvote or accept as answer, thank you.