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Noctua NH-D9L Review


Noctua NH-D9L: 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:



The results are in! The D9L performs very similar to the U9S, which also has a 92mm fan and 140watt heat dissipation. What is a little surprising is how the two fan setup seems to perform just as well considering that the second fan wasn't in the ideal placement. In fact, because of the constricted space and ram height clearance issues, I decided to setup Pull/Pull setup instead of Push/Pull. Take into consideration that not all coolers perform the same depending on its fan setup, as the fins and heatsink orientation plays a role in temperatures too. Overall, if the U9S coolers does not give you clearance necessary for a ITX or HPC built, then the D9L should fill those shoes just fine with little to no problems.

  1. Noctua NH-D9L: Introduction & Closer Look
  2. Noctua NH-D9L: Closer Look
  3. Noctua NH-D9L: Specifications & Features
  4. Noctua NH-D9L: Setup & Results
  5. Noctua NH-D9L: Conclusion
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