Ryzen 9 3900x Only showing 8 logical cores

  1. gettheclicker's Avatar
    Posts : 249
    Windows 10 Pro
       #1

    Ryzen 9 3900x Only showing 8 logical cores


    In my old setups I would have already found the fix but this has me stumped.

    MSI MPG X570 GAMING EDGE WIFI
    Ryzen 9 3900x 12 core
    Ryzen 9 3900x Only showing 8 logical cores-untitled.png
      My Computer

  2. bobkn's Avatar
    Posts : 3,609
    Win 10 X64 Pro 21H1 19043.928
       #2

    The only Windows 10 setting I know of that affects the number of processor cores in use is the one in the attached image. (Enter "msconfig" in the search or run window.) It's not something that would normally be turned on.Ryzen 9 3900x Only showing 8 logical cores-processors.png

    This what I get: Ryzen 9 3900x Only showing 8 logical cores-cou.png

    Aside from that, all that I would try is clearing the CMOS.

    Failing that, I'd guess that you have a defective motherboard or CPU.

    Best of luck.
      My Computers

  3. gettheclicker's Avatar
    Posts : 249
    Windows 10 Pro
    Thread Starter
       #3

    I feel so stupid, that did the trick! THANK YOU!!
      My Computer


 

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