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Cooler Master Nepton 240M Review


Cooler Master Nepton 240M Testing:

Testing of the Cooler Master Nepton 240M will be accomplished 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 for a period of two hours, with a cooldown period of one hour after the computer has returned to an idle state. Then an overclock of 4.2 GHz is applied, and the system is retested. Real Temp 3.70 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 24 °C during the testing to minimize the effect of temperature variations. Each cooler is tested with the manufacturer-supplied thermal compound as delivered.

Testing Setup:

Comparison Heat sinks:







Given the construction and hardware similarities between the Nepton 240M and Nepton 280L, it is not a surprise that the performance of the Nepton 240M parallels that of the Nepton 280L. You may think that the larger radiator and large JetFlo fans on the 280L would give it a significant advantage, but the numbers don't really show that. Stock idle temp is 27 °C and the load temp comes in at 66 °C, which is three degrees warmer than the 280L. 

The overclock idle is three degrees over stock idle at 30 °C. The cooling ability of the 240M certainly kicks into high gear when we apply the overclock. The temp hit 72 °C, which is even with the 280L. I would have expected a couple degrees higher, but I certainly won't complain. The new Silencio fans spool up, and the sound is noticeable, but not bad at all. The JetFlo fans that come with the 280L move more air, but are much louder. So what you may sacrifice in airflow, you gain with less sound and you do it without hurting performance.

One obvious advantage with water cooling is the relatively small and light weight water block and significantly lower stresses it imparts on the motherboard, particularly if your system is installed in a tower-style (vertical) case. I also factor in the ability to access things like RAM and various fan headers and CPU power plugs that large air coolers usually all but cover up.

  1. Cooler Master Nepton 240M: Introduction & Closer Look
  2. Cooler Master Nepton 240M Closer Look: Continued
  3. Cooler Master Nepton 240M: Specifications & Features
  4. Cooler Master Nepton 240M Testing: Setup & Results
  5. Cooler Master Nepton 240M: Conclusion
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