Nepton 140XL

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Introducing the Nepton 140XL, the latest All-in-One CPU water cooling system that aims to bring heat dissipation to the next level with a CM exclusive designed pump and highly effective waterblock. The Nepton also includes robust and extra thick FEB tubing to prevent moisture absorption while maintaining sufficient water flow for performance cooling. In addition, dual JetFlo 140 fans and a large 140mm radiator provide substantial cooling power, which enables users to overclock their CPU and maximize performance.
High Performance Radiator

The 140mm radiator includes a push-pull system to provide highly effective cooling and thermal dissipation. The Nepton radiator also includes compatibility for 140mm or 120mm fans for added customization.
CM Designed Pump

The CM designed pump and waterblock ensures the best water flow and system performance.
Robust & Extra Thick FEP Tubing

Robust & extra thick FEP tubing is strong and durable. FEP tubing also prevents moisture absorption.
     New UltraFine Microchannel

Designed for the best water flow and to draw maximum amount of heat away from the cold plate through the coolant.
JetFlo Fan Compatibility

The Nepton 140XL is equipped with dual JetFlo 140mm fans which create powerful airflow and pressure while minimizing vibration and noise through the included rubber pads. In addition, the radiator is also backwards compatible with all 120mm fans for total customization.
Illuminated Waterblock

Unique white LED lights up on the waterblock lens.


Model RL-N14X-20PK-R1
CPU Socket Intel LGA 2011 / 1366 / 1150 /1155 / 1156 / 775
AMD Socket FM2 / FM1 / AM3+ / AM3 / AM2
Dimension 75 x 69.8 x 49.1 mm ( 3 x 2.7 x 1.9 inch )
Radiator Dimensions 171 x 139 x 38 mm ( 6.7 x 5.5 x 1.5 inch )
Radiator Material Aluminum
Fan Dimension 140 x 140 x 25 mm ( 5.9 x 5.9 x 1 inch )
Fan Speed 800~2000 RPM (PWM) ± 10%
Fan Airflow 54~122.5 CFM ± 10%
Fan Air Pressure 0.7~3.5 mm H2O ± 10%
Fan Life Expectancy 40,000 hours
Fan Noise Level (dB-A) 21~39 dBA
Bearing Type Rifle bearing
Connector 4-Pin
Fan Rated Voltage 12 VDC
Fan Rated Current 0.3A
Power consumption 3.6W
Pump Life Expectancy 70,000 hrs
Pump Noise Level <25 dBA
Pump Rated Voltage 12 VDC
Pump Power Consumption 2.9W
Compatibility Front: Cosmos SE
Rear: Cosmos II, HAF XB, HAF XM, Trooper, HAF X
Warranty 5 years
UPC Code 884102025167
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    • Click logo to read full review: : January 2014

      "Any way you look at it, Cooler Master have a real winner in the Nepton 140XL. The larger diameter (15.5mm OD) Fluorinated Ethylene Propylene tubing, mix of 140mm fans and new generation pump head / waterblock have, for now, made quite the splash in the world of All-in-One CPU liquid coolers. Highly recommended. "

      » Details
      Modders-inc - Editors Choice : November 2013

      "It comes as no surprise that the Nepton 140XL performed extremely well and I have to attribute that largely to the JetFlo fans......The Nepton 140XL’s $99 price tag is also very competitive in this price range, offering some advantages over the typical Asetek or CoolIt solutions......For the price, flexibility, and sheer cooling power, the Cooler Master Nepton 140XL receives the Modders-Inc Editor’s Choice Award."

      » Details  Gold : November 2013

      "Cooler Master makes great strides in the AiO segment with the Nepton 140XL. Performance, versatility and engineering are all bumped up from what we typically see, yet pricing comes in right in the middle of the pack, in terms of its competitors. While the Nepton 140XL is not the perfect solution for every application, it would definitely be one of my first choices (and only choice among AiO) for a smaller form factor build where the CPU would be generating some heat."

      » Details Gold Seal : November 2013

      "The Cooler Master Nepton 140XL bundles great performance with innovative features to give one of the most diverse 140mm class AiO units on the market."

      » Details

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