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Cooler Master Nepton 240M Review

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Testing & Results

Testing Methodology

The Nepton 240M performance was evaluated against two other similar liquid cooling systems. The Corsair H100 is an older 240 mm cooling system, while the Corsair H110 is a new 280 mm cooling system. Published specifications for the three systems are shown below.

Cooler Master Nepton 240M Corsair H110 Corsair H100
Length 240 312 275
Width 120 140 122
Rad. Thickness 27 29 27
Cooling Fans 2 x 120mm 2 x 140 mm 2 x 120 mm
Total Thickness 52 54 52
Control Type none none Integrated/Auto
Noise Level 6.5-27 dB(A) 35dB(A) 22-39 dB(A)
Fan Speed 1200-2400 1500 RPM (+/-10%) 1300-2600 RPM(+/-10%)
Fan Airflow 16-76 CFM 94 CFM 46-92 CFM
AMD Sockets All AM2,AM3,FM1,FM2 All AM2,AM3,FM1,FM2  775,AM2,AM3
Intel Sockets 1150, 1156/1155,1156, 1366, 2011 1150, 1156/1155,1156, 1366, 2011 1150, 1156/1155, 1366, 2011
Warranty 5 Years 5 Years 5 Years
MSRP  $130 $130 $119

To be consistent, the same thermal paste was applied to each of the cooling blocks. The Arctic Silver Ceramique 2 paste was used for all three cooler installations.

Each product was measured for CPU temperature after running a 45 minute Aida 64 stress test. Because the test computer system has eight CPU cores, the average value of all eight individual cores was used for the final comparison. A digital thermometer and a FLIR camera were used to capture the ambient temperature during each test. Testing was performed later in the day when room temperatures had stabilized.

Noise measurements were also taken using a Galaxy Audio CM–240 SPL audio meter. Where possible, measurements were taken 1 meter from the center of the computer case. The CM–240 audio meter has a minimum SPL sensitivity of 32 dB(A) SPL. For measured values below 32 dB(A), the galaxy meter was moved to 500 cm from the source and the reading was divided by two. SPL values scale in a linear fashion, as opposed to sound intensity which has an inverse square relationship with distance.

Each of the three cooling systems was installed in the same test system as shown below.

Test System

The test computer system is a Intel i7-5960X based content creation machine with a modest 24/7 overclock of 4.2 GHz.

cpuz

The Corsair 800D enclosure provides ample room for top mounted installation of the cooling system, and has good ventilation with 240 mm front fans and one 120 mm rear exhaust fan.

Processor: Intel Core i7-5960X  @ 4.2 GHz OC
(Haswell-E)
Motherboard: Gigabyte GA-X99-GAMING G1
Intel X99
Memory: 4x 8GB G.Skill Ripjaws F4-2133C15Q-32GNT
@ 2133 MHz 9-11-10-28
Video Card: Zotac GeForce Titan Black 980MHz
Harddisk: Samsung 840 EVO 500GB
Power Supply: Corsair 1200
Case: Corsair 800D
Software: Windows 8.1 Pro
TIM: Arctic Ceramique 2

The Gigabyte x99 motherboard provides numerous fan headers for attachment to the liquid cooling system water block and fans. The BIOS allows setting the fans to 100%, or to be controlled through a Windows utility to an arbitrary percentage of the maximum speed.

In all test cases, the fans and pump of the cooler under test were connected to 3 or 4 pin motherboard fan terminals that were configured in the BIOS to operate at 100% speed.


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8 comments

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  1. Andrew Lane

    Hopefully they don’t have the same bearing issue that Corsair had with their version of this unit (H100)…

    1. Aidan Moore

      Hi,

      Time will tell. I’m very impressed with the silence of the unit so far in a 24/7 system , so I’ll be listening for any developing rattling or squeaking.

      BTW, I ran a Corsair H100 for 3 years without developing any bearing noise. The H100 is a good unit, but it’s stock fans run very loud under load.

      Aidan

  2. Marco

    I have a swiftech H220 in a long RMA and I’m thinking to buy the Nepton 240M. How is the H220 vs Nepton 240M ?

    1. Aidan Moore

      Hi Marco,

      Looking at the H220 specifications, the two units appear to be similar in performance. You will notice the lower noise of the Nepton (6.5 dBA min) vs the Swiftech (16dBA min).

      And the Nepton has a 5 year warranty vs the 3 years for the Swiftech. Overall the Nepton would be a great choice. I’ve been using it 24/7 with no issues.

      Good luck!

      1. Marco

        Hi Aidan,

        thanks for your prompt reply. The new Silencio fan do a great job! What about the pump ? Is it silent ?

        1. Marco

          *does

          1. Aidan Moore

            Hi Marco,

            Yes. The pump is inaudible even with the case open. All in all it’s a very quiet closed loop cooling system.

            Aidan

  3. marco

    Hi Aidan
    Thanks for info.

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