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Linux Prepares For Next-Gen AMD CPUs With Up To 12 CCDs

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  • Linux Prepares For Next-Gen AMD CPUs With Up To 12 CCDs

    Phoronix: Linux Prepares For Next-Gen AMD CPUs With Up To 12 CCDs

    The latest Linux kernel patches confirm that next-gen AMD Zen processors are capable of featuring up to twelve CCDs...

    https://www.phoronix.com/scan.php?pa...-12-CCDs-hwmon

  • #2
    Does k10temp still mis-report the temperature value for some CPUs or was that ever resolved?

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    • #3
      Shouldn't that be 16 since Bergamo is going to 128 cores?

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      • #4
        Originally posted by chuckula View Post
        Shouldn't that be 16 since Bergamo is going to 128 cores?
        For Bergamo I expect something like a Zen 2 CCD but with 2 x 8 cores and 8 CCDs per socket.

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        • #5
          Originally posted by chuckula View Post
          Shouldn't that be 16 since Bergamo is going to 128 cores?
          Bergamo's CCDs are expected to be made up of 16 efficiency cores.

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          • #6
            Originally posted by ezst036 View Post
            Does k10temp still mis-report the temperature value for some CPUs or was that ever resolved?
            There once was a version which reported voltages and wattages and it did so incorrectly in too many cases, so the feature has long been removed. Zenpower and its primary fork (zenpower3) are still there but they are not really maintained either. As for cores temperatures, I don't remember any issues.

            If you're concerned about low level hw monitoring, Windows/HWiNFO64 is the only option.

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            • #7
              Family 19h is squarely Zen 3, Michael

              I guess Zen 4 will be 20h or even 21h considering AMD has yet to release Zen 3 3D/Ryzen 6000.

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              • #8
                Originally posted by chuckula View Post
                Shouldn't that be 16 since Bergamo is going to 128 cores?
                12 CCDs x 8 cores for 96-core Zen 4 "Genoa".
                8 CCDs x 16 cores for 128-core Zen 4c "Bergamo". Each CCD having 2x 8-core CCXs like mumar1 says sounds reasonable.

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                • #9


                  Slightly off topic, but this is happening right now. 5800X / X570S AORUS Master. It feels great to be apart of the AMD Ryzen family. Rise up gamers.

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                  • #10
                    Originally posted by ezst036 View Post
                    Does k10temp still mis-report the temperature value for some CPUs or was that ever resolved?
                    Its still a mess.. I am in kernel 5.10, and in kaveri APU its a mess:

                    Ambient temp 9C, somehow the core is freezing at 0C...
                    Code:
                    k10temp-pci-00c3
                    Adapter: PCI adapter
                    temp1: +0.0°C (high = +70.0°C)
                    (crit = +70.0°C, hyst = +69.0°C)

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