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Noctua NH-U9S Performance For The AMD Ryzen 9 3950X + Ondemand vs. Performance Governors

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  • Noctua NH-U9S Performance For The AMD Ryzen 9 3950X + Ondemand vs. Performance Governors

    Phoronix: Noctua NH-U9S Performance For The AMD Ryzen 9 3950X + Ondemand vs. Performance Governors

    For those that may be looking to run an air-cooled AMD Ryzen 9 3950X especially in a rack-mount 4U chassis, here are some recent results I did from some testing using a Noctua NH-U9S with two 92mm fan configuration. Additionally, these results contain performance metrics from both CPUFreq Ondemand vs. Performance governors as an additional point of interest...

    http://www.phoronix.com/scan.php?pag...-U9S-AMD-3950X

  • #2
    Michael You really went all out on the bling for the RAM, I approve

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    • #3
      No tuning of the ondemand governor? No wonder it performs like shit. Set sampling_rate to something bigger than 1 (try 100).

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      • #4
        Originally posted by numacross View Post
        Michael You really went all out on the bling for the RAM, I approve
        That was part of the reviewer's kit for the 3990X or some recent AMD launch.
        Michael Larabel
        http://www.michaellarabel.com/

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        • #5
          Originally posted by angrypie View Post
          No tuning of the ondemand governor? No wonder it performs like shit. Set sampling_rate to something bigger than 1 (try 100).
          Default config on Ubuntu.
          Michael Larabel
          http://www.michaellarabel.com/

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          • #6
            I'd rather prefer a Noctua NH-D15 on my 3950x ;-) https://www.youtube.com/watch?v=AB9EJcOGGaw

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            • #7
              Originally posted by Michael View Post
              That was part of the reviewer's kit for the 3990X or some recent AMD launch.
              Those memory sticks belong in a rap video. They should be next to a Bentley full of subwoofers, with some fly girls dancing around. Bling bling baby!
              Last edited by torsionbar28; 10 February 2020, 05:36 PM.

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              • #8
                Originally posted by Article
                The NH-U9S was testes...
                Freudian slip? There were two of them after all...

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                • #9
                  Originally posted by angrypie View Post
                  No tuning of the ondemand governor? No wonder it performs like shit. Set sampling_rate to something bigger than 1 (try 100).
                  You probably mean sampling_down_factor, not sampling_rate. The sampling_rate on my machine is 20000 (by default).

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                  • #10
                    I don't think the ondemand governor is going to be optimal for a benchmark usage pattern, which naturally has a higher level of usage than usual.

                    That said, I've always preferred use of the performance governor and I think especially on modern CPUs it works out well because it delegates the decision to the processor, essentially just setting a performance bias. The CPU is probably in the best position to make the fast decisions about how to use power most effectively.

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