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Noctua NH-U9S Review


Noctua NH-U9S: Testing

Testing is conducted by installing the cooler into the test system case, rather than a test bench. Most systems are built and mounted into a (relatively) sealed chassis, so this method will be used to generate the idle and load results to give a real world view as to the cooling performance one can expect, based on the test system listed below. Of course, your results may vary by several degrees due to case design, case fan placement and ambient air temperature. The CPU load is generated by Prime 95 version 27.9 using "Small FFTs" for a period of one hour, with a cool down period of one hour after the computer has returned to an idle state. HW Monitor 1.18 is used to log the temperatures with the highest and lowest averages across the four cores of the Core i7 4770K test CPU. Ambient temperatures are kept at 23 °C during the testing to minimize the effect of temperature variations. 


Comparison Coolers:



As you can see in the above charts, the U9S does fairly well considering it's a bit smaller than the competition. Any cooler with a large enough heatsink and airflow can achieve low temperatures, but it's hard to accomplish the same thing in a small form factor. Under load, in both stock and overclocked, the U9S does the job well enough. Keep in mind this cooler isn't marketed towards overclocks, but rather small spaces within the ITX realm. Also being able to dissipate 140watts is enough for most CPUs and mild overclocks. Either way, if you have a chassis that is limited in space, this cooler is definitely better than any Intel or AMD cooler!

  1. Noctua NH-U9S: Introduction & Closer Look
  2. Noctua NH-U9S: Closer Look
  3. Noctua NH-U9S: Specifications & Features
  4. Noctua NH-U9S: Setup & Results
  5. Noctua NH-U9S: Conclusion
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