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

[phoronix]

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?page=news_item&px=Noctua-NH-U9S-AMD-3950X

[numacross]

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

[angrypie]

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

[Michael]

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]

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.

[rene]

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

[torsionbar28]

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!

[Slithery]

The NH-U9S was testes...

Freudian slip? There were two of them after all...

[GreenReaper]

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.

[M@yeulC]

I'd be really interested in power usage figures.

How do you set the governor on Ryzen CPUs, BTW?