Noctua NH-U9 TR4-SP3: Keeping Threadripper Running Happy With Air Cooling

Written by Michael Larabel in Peripherals on 21 September 2017 at 10:48 AM EDT. Page 2 of 2. 8 Comments.

Patches for supporting the Ryzen/Threadripper/Epyc CPU temperature reporting under Linux were only made public days ago. So when first getting this heatsink and previously using the closed-loop water cooling system, I wasn't able to grab any CPU temperatures.

AMD Ryzen Threadripper 1950X

Though with the patches now available and can be found in hwmon-next, I did run some benchmarks of the Threadripper 1950X system with this patched Linux 4.14 kernel. The 4U chassis used was the SilverStone CS350.

AMD Ryzen Threadripper 1950X

That's a look at the Threadripper 1950X with Noctua NH-U9 TR4-SP3 under a variety of different workloads. The average temperature was 44.9°C with a peak of 66.25°C. That's not bad for air cooling with a 180 Watt CPU. Though some Linux users have said the k10temp Zen CPU temperature reporting is lower than what is found from the BIOS or under Windows. But anyhow, I haven't run into any thermal throttling or any thermal-related issues in the few weeks of using the NH-U9 TR4-SP3 heatsink.

AMD Ryzen Threadripper 1950X
AMD Ryzen Threadripper 1950X

During OpenMP workloads and parallel code compilation is obviously when the Threadripper was getting the warmest.

AMD Ryzen Threadripper 1950X

While during single-threaded workloads, the temperature was quick to recede.

The dual 92mm fans are relatively quiet, the NH-U9 TR4-SP3 squeezes into 4U height requirements, and it's all-around been working out well on my Threadripper Linux system. The NH-U9 TR4-SP3 is currently priced at $69 USD from the likes of Amazon and NewEgg.

If you enjoyed this article consider joining Phoronix Premium to view this site ad-free, multi-page articles on a single page, and other benefits. PayPal or Stripe tips are also graciously accepted. Thanks for your support.

Related Articles
About The Author
Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via