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RobinCM's avatar
RobinCM
Copper Contributor
May 03, 2022

Windows 11 Hyper-V and 12th gen Intel CPUs

Hi,

I'm looking for some official info about whether or not Hyper-V in Windows 11 supports the 12th gen Intel CPUs. These CPUs have two sets of cores, Performance (P) and Efficiency (E).

I have read things on some other forums that seem to suggest that Hyper-V does not understand these new core layouts and that you have to disable the E cores in the machine's firmware in order to enable Hyper-V to work.

Can anyone confirm or deny this? I'm currently having to delay buying 12th gen CPUs until I know that this works properly.

Thanks.

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deployment

4 Replies

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  • Kademlia's avatar
    Kademlia
    Copper Contributor
    Nov 07, 2022
    Everything works fine for me now with Windows 11 HyperV and the Intel i7-12700. I have the E cores enabled.
  • andrgin's avatar
    andrgin
    Copper Contributor
    Jun 01, 2022
    In the meantime I got some additional feedback and the majority claims that it does work even with E cores enable, so as most reports of it not working are older I assume there has been a fix for it.

    I made a thread here and someone says it works with a 12700K:
    https://docs.microsoft.com/en-us/answers/questions/856558/does-windows-11-hyper-v-support-intel-12th-gen.html

    There is also a thread on the Dell community forums saying it works with an 12700H.
    An amazon report (translated from Spanish) said it not works after update Windows
    A post on some Chinese forum said it did work
    Also found a guy posting some benchmark results that seem to be with e cores on (based on his score) and he claimed that Hyper-V was on

    So far I only found one guy having problems at Windows10+11, but I am not so sure if this maybe was with outdated Windows builds.

    But so far I did not find someone that could confirm it to be working on Windows Server, so this might still be an issue.
    • asifh980's avatar
      asifh980
      Copper Contributor
      Jul 01, 2022

      andrgin Hyper-V is still not working in the latest Windows Server 2022 (version 21H2). You need to disable E cores to get it working.

  • andrgin's avatar
    andrgin
    Copper Contributor
    May 11, 2022
    This is important for me as well as no Hyper-V support would make new 12th gen devices useless for me.

    From what I know:
    .) It is still broken under Server 2022 and below if E cores are enabled
    .) It should work if e cores are disabled, but most OEM devices do not have this option in BIOS. Also this would turn most U series laptops into Dual cores so not really an option

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