Introduction, Specifications, and First Impressions

We check out the all-new design of this 240mm liquid cooler

Cooler Master has introduced a pair of new all-in-one liquid CPU cooler designs, with the former Nepton series now replaced by the MasterLiquid Pro 120 and 240. It is the larger of these that we have for you today, and in this review we'll see just how well this new design performs.

“Based on our expertise in thermal technology, we reengineered how liquid absorbs and expels heat throughout the all-in-one (AIO) closed loop of the cooler. Our holistic approach to the flow puts in your hands a comprehensive cooling machine that lasts longer, performs better and requires virtually no maintenance.”

The MasterLiquid Pro 240 uses what Cooler Master is calling “FlowOp Technology”; a series of design choices that are intended to improve all aspects of the cooler's efficiency. It begins with the pump, which “sprays liquid directly at the center of the water block”, and the block, which offers what Cooler Master claims to be 657% more surface area (thanks to many more “ultra-fine fins on the copper base”) and 40% greater performance compared to previous designs.

The radiator features a square fin design, which the company claims “creates greater surface area for absorption of the heat and allows for spacious airflow”.

These claims, along with a pair of Cooler Master’s new “MasterFan Pro Air Balance” fans, make this new design sound very powerful, and I couldn’t wait to get it on the testbench to find out just how powerful – and quiet – it might be.

Specifications for the MasterLiquid Pro 240:

Model: MLY-D24M-A20MB-R1

Socket Compatibility:

  • Intel LGA 2011-3 / 2011 / 1366 / 1150 / 1151 / 1156 / 1155 / 775
  • AMD FM2+ / FM2 / FM1 / AM3+ / AM3 / AM2+


  • Material: Aluminum
  • Dimensions (L x W x H): 275 x 118.5 x 27 mm (10.83 x 4.67 x 1.06 inches)


  • Dimensions: 120 x 120 x 25 mm (4.7 x 4.7 x 1 inch)
  • Speed: 650 ~ 2000RPM ± 10%
  • Air Flow: 66.7 CFM (Max), 113.32 m3/h (Max)
  • Air Pressure: 2.34 mmH2O ± 10% (Max)
  • Rated Voltage: 12 VDC
  • Connector: 4-Pin (PWM)
  • Noise Level: 6 ~ dBA


  • Material: Copper
  • Dimensions (L x W x H): 94.8 x 68 x 56.9 mm (3.7 x 2.68 x 2.2 inches)


  • Speed: 1100 ~3300RPM (PWM)
  • Bearing Type: Ceramic
  • Rated Amperage: 0.5 A
  • Rated Voltage: 12 VDC
  • Power: 6.0W
  • Power Connector: 4-Pin (PWM)
  • Noise Level (dB-A): < 12 dBA
  • LED: Blue


  • Diameter: Φ8 mm
  • Length: 358 ± 5mm

Our thanks to Cooler Master for providing the MasterLiquid Pro 240 for our review.

First Impressions

The packaging is attractive, and more importantly it holds the parts securely within. Once opened we have the cooler, fans, rubber gasket, mounting backplate, and a very thoughtful blister-pack of hardware.

I greatly appreciate the organization of this sort of accessory packaging, and it is very simple to find the appropriate hardware for your motherboard. The included instructions are clear, and easy to follow.

On the next page we'll explore the design and installation of the MasterLiquid Pro 240.

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