Test and review: Cooler Master MasterLiquid Pro 240 – Integrated water cooling system with closed loop

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

Cooler Master has some experience in the field of cooling systems with closed-loop. It may be noted Eisberg line, as well as with an expandable loop CBO, developed in collaboration with Alphacool – just recently we tested Alphacool Eisbaer. The new line MasterLiquid Pro refers to the classic NWO closed loop. It entered the market two MasterLiquid Pro models 120 and 240, respectively, with a 120-mm or 240-mm coil. Also in the future we plan options with 140- and 280-mm coils.

Regardless of the format of the heat exchanger, the cooler MasterLiquid Pro has two distinctive features. Namely, Cooler Master has changed the design of the pump and radiator. Water-block consists of two chambers, separated from the pump contact plate, it will be less exposed to heat, which will last longer. In particular, Cooler Master indicates the average duration of 175,000 hours, which is 2.5 times higher than conventional pumps. Of course, due to time constraints, we were unable to verify this promise. With regard to the radiator, there have been adapted cooling fins. Now they have a rectangular structure. Also, the contact points between the ribs were optimized cooling circuit CBO and canals, which provides a more efficient heat transfer. Finally, the new cooling fins less hinder the passage of air flow. It is possible to use the fans that are not set to the maximum static pressure, therefore quieter running. On the other hand, the surface area ventilated by the fan becomes slightly smaller.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

On Cooler Master video shows the main functions MasterLiquid Pro cooling system and the structure of the pump the water block.

Cooler Master has announced the prices in Europe. MasterLiquid Pro 120 will cost 109.90 euros, MasterLiquid Pro 240 will have to pay 119,90 euros.

MasterLiquid Pro 240: In detail

Cooler Master Carton large, inside quite spacious, a manufacturer might well reduce it. In the box carefully packed CBO and accessories, they are well protected from accidental knocks.

Together with the NWO you will receive an illustrated user manual, warranty card and installation accessories. Cooler Master, in contrast to the recently tested the air cooler MasterAir Maker 8, did not make separate rear plate for the Intel and AMD platforms, it uses a combination plate. Just for AMD and Intel sockets it is applied by different parties. Also in the package includes a vibration isolating rubber mask and a syringe with thermal paste Cooler Master (Mastergel Pro). To be able to power the two fans from one connector PWM Y-adapter attached.

At first glance MasterLiquid Pro 240 differs from the usual NWO closed loop – just look at the design radiator and water block.

The pump is separated from the hot copper plate, it is passed into a separate chamber which is located above the main chamber. As pointed out by Cooler Master, liquid “sprayed” from the pump directly to the lower chamber of the water block. Then, the heated liquid passes the radiator, is cooled, and then re-enters the pump chamber. However, in practice, the liquid temperature in the loop will be nearly constant – the standard high flow rate.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

The transparent cover reveals a view of the segment with a fanfare. It is decorated with the logo of Cooler Master and is highlighted in blue. Due to the transparent cover and pump round shape similar to an analog meter, it looks nice and original.

With the processor contacts a massive copper base, absorbing heat. Inside pump “atomizes” the liquid directly from the central region of the ribs. The liquid passes through the thin fins, taking heat. The fins increase the contact area of the base plate.

The heat exchanger tubes are connected and the water block, not just rubber and made of FEP (Fluorinated Ethylene Propylene). Material FEP Teflon belongs to the brand, it is more reliable than the rubber. Do you pay attention to the heat sink bends rectangular edges, Cooler Master calls this design “Square Fin Design”.

It should also be noted that the thickness of the heat sink is small – only 2.7 cm So MasterLiquid Pro 240 is suitable for enclosures where available is not much room for the heat exchanger.. In aluminum radiator can be seen and the third hole next to the two handsets – it Cooler Master has provided to fill the CBO circuit. There is a paper label indicating that the opening of the plug leads to loss of warranty.

Cooler Master did not use the time-tested fans by new MasterFan Pro 120 Air Balance (AB). Fans with PWM control are isolated with rubber corners, they are screwed. According to Cooler Master, the fans are not optimized for high static pressure, but provide a good balance between cooling performance and noise level. Special functions can be called a small switch on the fan center. It allows you to adjust the PWM band in three stages. Namely 650-1.300 rev / min, 650-2.000 / min (default) or 650-2.500 rev / min. Fans are characterized by high reliability, mean time to failure (MTTF) of 490,000 hours.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

In addition to rubber parts vibration isolation can take advantage of a complete rubber mask. It can be simply bolted together with the fans. By installing the Cooler Master went on his way, fans can fasten thumbscrews. Replacement fans can be performed even on installed heat exchanger. Therefore, we decided to conduct additional tests to benchmark our fans.

Preparation of the back plate for mounting on the Intel platform was the most difficult step during assembly. Make sure that the mounting screws with plastic inserts are in the correct positions. Make it easy, because the holes are signed. Then, attach the water block to the right bracket (for AMD or Intel platforms), after which the brackets are placed on the mounting backplate screws and fixed thumbscrews. As might be expected from the CBO closed loop around the CPU socket is a lot of space. Problems of compatibility as compared to the large air coolers is unlikely to arise.

Test configuration and testing procedure

We’ve put together a new test system that is closer to the mass gaming computers. 8-core Xeon conceded Intel Core i7-4790K place, which is very popular in gaming PCs. The Radeon HD 7970 from Gigabyte energy consumption corresponds to the modern high-end models. We chose the housing NZXT H630. Full Tower offers ample space for the highest CPU coolers, as it allows you to test large CBO closed loop. In H630 housing insulation measures are taken, so it is not focused on uncompromising cooling performance, rather on the optimal balance between noise and cooling. The same can be said about the popular body Define by Fractal Design.

Below are the specifications of the test system

  • Test configuration
  • Processor Intel Core i7-4790K (4.2 GHz)
  • Motherboard ASUS Z97-DELUXE (NFC & WLC)
  • RAM Corsair Vengeance LP 8 GB DDR3
  • Video card Gigabyte GV-R797OC-3GD
  • System Storage 240GB OCZ ARC 100
  • The power supply unit Antec HCP-1300 Platinum
  • The case NZXT H630
  • Thermal grease Arctic Cooling MX-2
  • Chassis Fan 1x 200mm (front)
  • 1x 140mm (rear)
  • Operating System Windows 10 Home

200-mm frontal fan worked with an acceptable noise level, because we switched it to 7 using an adapter. The rear fan we left at 12, so he moved on a constant rate of 1,100 rev / min. It is possible to achieve a reasonable balance between sufficient cooling performance and an acceptable level of noise the fan housing. And our test conditions as close as possible to reality. Too much to reduce the speed of the fan housing is not worth it, because then the body will accumulate too much heat.

We conducted noise measurement using the VOLTCRAFT SL-400 at a distance of 20 cm from the left side of the chassis. The case itself was soundproofed assembled and closed. Room temperature we normalized to 20 ° C, under this we checked the temperature using infrared thermometer VOLTCRAFT 800-200. During each stress test we were recording the temperature, the cooler had to endure a 30 minute run Prime95 (we used a rather “heavy» Small FTT test). The temperatures for the entire test period were recorded in CoreTemp tool magazine, and then we calculate the arithmetic mean of maximum temperatures (less deduction of the difference with the normalized room temperature). Him we shall be entered in the diagram. As we took thermal paste Arctic Evergreen MX-2. We spread the thermal grease on the CPU surface using WLP blades.

Here are the tools that we have used in the tests:

Software used:

  • CoreTemp 1.0 RC6
  • Prime95 x64, Version 26.6 (build 3)

We conducted the following test scenarios:

  • The regular fan at 1,000 rev / min
  • The regular fan at maximum speed
  • The regular fan at 600 rev / min
  • The regular fan at 1,000 rev / min

MasterLiquid Pro 240: Noise level

Cooler Master in Performance mode, exhibit MasterFan Pro 120 Fan Air Balance (AB) speeds up to 2,500 rev / min. At such high speeds, no fan will not work silently. Moreover, Cooler Master picture worsens the uneven nature of the noise. At 1,000 rev / min noise characteristics more uniform, but the work can not be called quiet CBO. Also, when a speed of the fans clearly audible noise of the pump. We could not change the speed of the pump by connecting a PWM motherboard, ASUS utility refused to change the speed. The minimum fan speed 650 rev / min corresponds to the noise level of 31.4 dB (A). Fans were barely audible, but the quiet chirping of the pump was noticeable.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

MasterLiquid Pro 240: Tests with standard fan

The following test scenario, we evaluate the performance of the cooler with the standard fan at 1,000 rev / min and at maximum speed. For the tests we conducted CBO measurements without the housing cover so that it does not limit the cooling performance.

Fans MasterLiquid Pro 240 with a maximum speed of 2,500 rev / min provide decent reserves for cooling performance. For everyday use, this mode is not very good because of the hands-free operation, but the cooling performance is quite high. Despite the slim radiator and fan installation with only one hand, the gap from the best competitors CBO closed loop remains small. By reducing the speed to 1000 rev / min cooling performance is reduced, appearing on the same level with the air coolers.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

MasterLiquid Pro 240: Reference fan Tests

To compare “pure” performance coolers without affecting regular fans, we equip all our reference cooler fans. We used a powerful fan Noctua NF-A15 PWM, the distance between the mounting holes is 105 mm, speed – up to 1,200 rev / min. If such fans can set on the radiator was absent, we used a more compact Noctua NF-F12 at a speed of 120 mm to 1,500 rev / min. In the case of coolers, designed for “real” 140-mm fans with hole spacing of 140 mm, we used the NF-A14 PWM.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

Reference fans at 1,000 rev / min slightly improve the cooling performance, the temperature drops by 2 degrees, MasterLiquid Pro 240 is closer to the leaders. By reducing the speed to 600 rev / min performance CBO Cooler Master drops and with reference Noctua fans. Still slim radiator with an unusual design does not react to the low fan speed.


Someone integrated approach may seem pure marketing. But Cooler Master MasterLiquid Pro 240 still has some unusual solutions. In particular, the attention of the pay changes waterblock with a pump and a radiator. As a result of the separation of the water block into two chambers by the manufacturer promises long life, though difficult to verify this statement. The radiator may benefit from the unusual design of the cooling fins, but we have identified a slim design, while the cooling capacity decreases rapidly with decreasing fan speed. At high speeds, the fan MasterLiquid Pro 240 gives an adequate cooling capacity, but it is very noisy for the decision of NWO.

Test and review: Cooler Master MasterLiquid Pro 240 - Integrated water cooling system with closed loop

The advantages of thin heat sink may include a very good compatibility. With fans MasterLiquid Pro 240 requires only 5.2 cm of space, it can be installed in the body, too tight for most competitors. By assembling MasterLiquid Pro 240 turned out to be user friendly. Convenient and some small things, for example, Cooler Master has provided thumb screws for mounting of fans. What it makes it easy to change the fans even after the installation of ITS in the body.

With a suggested price of 119,90 Euro cooler MasterLiquid Pro 240 is among the most expensive models with a 240-mm coil. If you need more flexible cooling system CBO, then with a small surcharge, you can take the Alphacool Eisbaer 240. It can be expanded as required, also the cooling capacity above. But the radiator in her 3 mm higher, so MasterLiquid Pro 240 boasts a little better compatibility with the narrow hulls. And it looks prettier than a bulky cooler Alphacool. If the space for heat exchanger – no problem, pay attention to the Arctic Liquid Freezer 240, which can be taken at a more attractive price. Water cooling system is a closed loop of 6.3 thousand. rubles in Russia and 50 euros cheaper MasterLiquid Pro 240, it benefits from a lower fan speed in two-way configuration.

MasterLiquid Pro 240 is different from other water cooling systems, higher reliability, the original design and construction. But the price corresponding to the CBO.

Benefits Cooler Master MasterLiquid Pro 240:

  • Good cooling performance at high fan speed
  • Thin radiator improves compatibility
  • The user-friendly installation thanks to the thumbscrews, you can easily replace the fans after the installation of the radiator in the enclosure
  • The manufacturer promises long life of the pump and fan
  • For fans, you can specify a range of PWM

Disadvantages Cooler Master MasterLiquid Pro 240:

  • At high speed the high noise level with uneven character
  • The cooling effect is quite reduced with decreasing fan speed
Test and review: Cooler Master MasterLiquid Pro 240 – Integrated water cooling system with closed loop was last modified: July 15th, 2016 by Tomas Shellby