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Cooler Master MasterAir Pro 4 – Test and Review

Cooler Master MasterAir Pro is a brand new series which already includes two brand new models MasterAir Pro 4 and MasterAir Pro 3 based on older and very well proven models and designed with slim dimensions to provide nice and clean look combined with decent cooling performance. The series itself features:

  • MasterAir Pro 3 with dimensions of 78 (L) x 117 (W) x 140 (H) mm and overall weight of 390 g featuring 3 copper heatpipes with Continuous Direct Contact Technology 2.0 (CDC) and cooled by 92mm fan.
  • MasterAir Pro 4 with dimensions of 84 (L) x 129 (W) x 158.5 (H) mm and overall weight of 472 g featuring 4 copper heatpipes with Continuous Direct Contact Technology 2.0 (CDC) and cooled by 120mm fan.

For this test and review I received the bigger brother in the series, which is a pretty sleek and very promising looking product, so let’s proceed with the article by opening the carton package, checking the content inside of it and after that paying attention to the features of the product and last but not least running some cooling stress tests.

On the front panel of the pretty tight and grey colored carton package there are just the company logo, the product name and some basic details regarding the CDC 2.0 technology, while the full technical specifications, description of the technologies used so this cooler can be created, explanations and many more technical details including small pictures could be found on all other sides of the package.

So let’s leave the package alone for now and proceed the article with checking the content placed inside.

 First look inside of the box The cooler itself


First thing to notice after I opened the package for the first time was the pretty big white carton box, which as usual is holding all of the additional accessories placed on top of the special plastic bed holding and protecting the heat sink and the fan from any external intervention, which could cause a damage to the product.

Enough about the external package, let’s dig deep inside the white carton box and later the structure of the product.


Cooler Master MasterAir Pro 4 ADDITIONAL ACCESSORIES

All of the additional accessories were provided to me thoughtfully packed in separate nylon bags to guarantee that every single piece part of the accessories pack will arrive and will provide the best possible cooling compatibility.

After I took all of the accessories out of their packages and arranged them for taking pictures, this is the view I got.

The standard MasterAir Pro 4 additional accessories pack features:

  1. Universal X type bracket for mounting the cooler on Intel and AMD platforms
  2. A combined metal back plate for both Intel and AMD platforms
  3. A set of 4 additional push-pin brackets for Intel platforms, which should be fastened to the contact plate of the heat sink
  4. A set of 8 short bolts to fasten the push-pin brackets to the contact plate of the heat sink
  5. A set of 4 long thumbscrew standoffs for AMD and Intel systems
  6. A set of 4 short thumbscrew standoffs for Intel 2011 and 2011-V3 systems
  7. A set of 4 nuts to fasten the standoffs to the back plate through the motherboard
  8. A tool which should be attached to a screwdriver for fastening the nuts
  9. Two additional plastic brackets for a second fan in push-pull setup
  10. A set of 4 small screws to fasten second fan to the additional plastic brackets
  11. A set of 4 rubber dampers for killing any fan vibration
  12. A metal wrench for fastening the nuts
  13. A syringe of thermal compound
  14. An installation manual

By checking all of the additional accessories, part of the very extensive accessories pack delivered with the cooler I can say that the guys from Cooler Master are definitely providing a wide range of compatibility options and a lot of cooling possibilities. Also by checking the quality for the components, which are really solid and will definitely do the job of holding the cooler in place providing solid and reliable cooling connection between the heat sink and the processor.

Enough about the additional accessories. Let’s put them aside until they are required for the actual heat sink installation and the following testing.


Cooler Master MasterAir Pro 4 HEAT SINK STRUCTURE

Before I start describing the cooler and all of the components added in the package I spent some time examining its structure which offers a heat sink formed as a pretty sleek single tower with some interesting features, a single MasterFan Pro 120 Air Balance cooling fan and the versatile mounting system provided by the company.

The heat sink itself is with dimensions of  60 (L) x 116 (W) x 158.5 (H) mm without the fan and when the MasterFan Pro 120 Air Balance is installed the overall dimensions of the cooler are 84 (L) x 129 (W) x 158.5 (H)mm and weight of 472 grams.

So let’s pay attention to the contact plate first.

 The CDC 2 contact plate  The pipes arrangement


Cooler Master MasterAir Pro 4 is designed and equipped with aluminum contact plate with dimensions of 60 (L) x 35 (W) x 14 (H) mm holding in line the 4 x Ø6mm copper heat pipes aligned according to the Continuous Direct Contact Technology 2.0 (CDC), which compresses the heat pipes together to provide 45% more surface area on the cooler base which improves heat dissipation compared to previous version (CDC 1.0). The contact plate itself features 8 holes, which could be used so the 4 push-pin brackets for Intel sockets can be attached to the heat sink. The contact surface of the product is with dimensions of 35 x 53 mm to provide a wider CPU compatibility range.

And since this product is part of the Cooler Master portfolio, the top part of the contact plate is actually made for holding the crossbar, which is needed so this cooler can be fastened to the mounting kit.

In addition, all of the copper heat pipes are not featuring any coating for better aesthetics or protection.

So let’s proceed the article with checking the aluminum fin stack, which has a lot to offer.

Side view  Front view


Cooler Master MasterAir Pro 4 offers a symmetrical to the center of the cooler single tower heat sink with dimensions of 116 (W) x 111 (H) x 50 (D) mm and featuring 56 absolutely identical performance 0.40 mm thick aluminum fins with 1.6 mm fin gap and 57th performance/visual fin entirely in black on top of the fin stack to improve the overall appearance of the product. Also the structure of the fin stack is designed to ensure least airflow resistance which allows cooler air between the fins and into the heat sink.

One more interesting feature regarding the MasterAir Pro 4 are the patented X-vents and Air-Guide, which pass through all 56 performance fins to provide extra ventilation to the hottest spots.

Additionally, the heat sink itself is made to be compatible with up to two 120mm fans which should be attached with the provided in the package 4 x plastic brackets.

And by mentioning the cooling fan, let’s proceed the article with checking what the fan provided in the package has to offer.

Cooler Master MasterAir Pro 4 is provided with just one MasterFan Pro 120 Air Balance fan which is part of the newly announced MasterFan Pro 120 series with dimensions of 120 x 120 x 25 mm. The fan itself is designed with an entirely painted in black frame and propeller with 9 pretty narrow and at the same time very sharply angled blades working at three different operational modes:

  • S Mode (Silent) – the fan is working at 650-1,300 ± 10% revolutions per minute range providing maximum airflow level of 42.7 CFM ± 10%, static pressure level of 0.96 mmH2O ± 10% with noise level range of 6 – 20 dBA.
  • Q Mode (Quiet) – the fan is working at 650-2,000 ± 10% revolutions per minute range providing maximum airflow level of 66.7 CFM ± 10%, static pressure level of 2.34 mmH2O ± 10% with noise level range of 6 – 30 dBA.
  • P Mode (Performance) – the fan is working at 650-2,500 ± 10% revolutions per minute range providing maximum airflow level of 83.1 CFM ± 10%, static pressure level of 3.63 mmH2O ± 10% with noise level range of 6 – 36 dBA.

The connection between the propeller and the frame is done by а 4-pin PWM powered and regulated bearing made to provide quiet, stable and long life operation of up to 490 000 hours. Of course, to switch between the 3 different operational modes, there is a small switch on the back of the stater.

To perform its cooling duties the fan should be attached on the front of  the heat sink via the 2 plastic brackets entirely in black provided in the package. As a nice touch the two brackets have designated space in which 4 rubber dampers should be placed and stuck.

The fan brackets The fan installed


The guys from Cooler Master also added a second pair of plastic clips and 4 rubber dampers, so if anybody decides to, a second fan for maximum cooling performance could be added, which can be installed on the back side of heat sink in push-pull setup.

With the fully assembled cooler, let’s check the mounting kit and proceed with the tests.

According to the official technical details, MasterAir Pro 4 is compatible with:

  1. Intel sockets: Intel® LGA 2011-v3 / 2011 / 1366 / 1156 / 1155 / 1151 / 1150 / 775 socket
  2. AMD sockets: AMD® AM4* / AM3+ / AM3 / AM2+ / AM2 / FM2+ / FM2 / FM1 socket

In addition, the guys from Cooler Master added additional information, located on the official web page regarding the completely new AM4 socket:

AMD AM4 upgrade kit needed, please visit: AMD AM4 Ryzen Compatibility

Of course, for doing the tests with my AMD FX8350 rig, which is AM3+ socket I will use the already provided in the package AMD brackets and these are the parts needed so the cooler can be installed on the motherboard.

And of course, before I proceeded with the actual cooler installation, I spent some time checking the AMD installation manual, reading the instructions carefully and preparing all of the mounting kit parts.

The first thing to do is to remove the original motherboard back plate. Add the combined metal plate provided with the cooler and secure it with the 4 x AMD thumbscrews and 4 nuts from behind.

And of course, the last step was to add thermal compound and secure the heat sink to the processor with the front x shaped crossbar.

And this is what the heat sink looks like installed on the motherboard:

 Heat sink seen from the front Heat sink seen from the side


As you can see from the pictures above, with the heat sink installed on the motherboard the cooler is blocking the first DRAM slot. If the system is equipped with RAM modules without or with short heat spreaders the fan could be lifted up a bit and it will work. If the RAM modules are with taller heat spreaders the cooler will definitely block the usage of the first slot.

And this is what the cooler looks like installed on the motherboard and inside the case ready for testing.

Since the CPU cooler is already installed on the motherboard and back inside the case and I believe I should proceed with testing its cooling capabilities.

But first, let’s check my testing rig and continue the article.


Cooler Master MasterAir Pro 4 TESTS

CPU: AMD Vishera FX-8350

  1. At standard frequency 4.020 MHz (at 1.356V)
  2. At low overclock frequency of 4.220 MHz  (at 1.392V)
  3. At medium overclock frequency of 4.420 MHz (at 1.428V)

Motherboard: GigaByte 990FXA-UD3

Video card: 2 x Gigabyte GV-R927XOC-2GD

Memory: 2 x 4GB Geil Black Dragon 1866 MHz

Hard drive: Kingston SSD SV100S264G

Hard drive:  WD Server Edition WD1002F9YZ 1TB

Case: SilverStone Raven RV-03

Power supply: Antec HCP-750W

Cooler: Cooler Master MasterAir Pro 4

Thermal paste: Noctua NT-H1 thermal compound


The tests will be conducted in a closed system with:

  1. 2 x SilverStone AP181 – 180mm fans on the bottom panel of the case putting fresh air in and spinning at about 1200 rpm
  2. 120mm fan behind the motherboard cooling the socket and spinning at about 1000 rpm.
  3. Room temperature of about 19 degrees.

Both SilverStone AP181 – 180mm fans were connected together to the chassis 1 connector and were rotating at maximum speed.

And here I want to describe my testing method.

I will install Cooler Master MasterAir Pro 4 and do stress tests using Prime95 AVX software with constant load on the AIO for 14:30 minutes with custom settings of minimum FFT size (in K of 128), max FFT size (in K of 128) and Run FFTs in place at standard frequency of 4.020 GHz (at 1.356V), at low overclock frequency of 4.220 GHz (at 1.392V) and at medium overclock frequency of 4.420 GHz (at 1.428V) using the fan provided with the cooler installed on the front of the radiator, rotating at maximum speed of 2500 revolutions per minute.

Now let’s check out the test results:

MasterAir Pro 4 @4020MHz 1.356V MasterAir Pro 4 @4220MHz 1.392V
MasterAir Pro 4 @4420MHz 1.428V  


All of the test results have been summed up in the following charts:

And the fan speed during the tests:

I believe the time to express my feelings and thoughts regarding the product has arrived.


Cooler Master MasterAir Pro 4 CONCLUSIONS

1. Cooler Master MasterAir Pro 4 performance:

Cooler Master MasterAir Pro 4 is a cooler, which I’ve been really eager to test and review since it was released just because I am a big fan of the older 212 models and I was curious what its actual performance would be. Overall, the cooler is with pretty tight dimensions and with just 4 heat pipes, which made me a bit skeptical about what should I expect.

Despite its dimensions, I was very surprised after I summarized the test results through all 3 tests. The cooler provided pretty serious cooling capabilities, thanks to the improved CDC technology and handled to keep my pretty hot FX 8350 processor running really stable at pretty decent temperatures. By seeing the results with my CPU, I can say that the cooler is really good performer and will definitely handle every low, mid or high grade processor working cool, stable and quiet at default or a bit overclocked frequencies. Still for extreme overclocking this model might not be the best option just because there are only 4 pipes passing through a single tower with pretty slim size.

Anyway through the tests the fan was working at full speed and was really noisy but after the tests when I set it to be PWM powered and regulated it maintained decent noise level. Of course, when there was a serious CPU load the motherboard was increasing the speed for a few seconds, accordingly the noise level too, but after few moments everything was back to normal.


2. Cooler Master MasterAir Pro 4 appearance:

MasterAir Pro 4 is definitely a cooler based on the models from the older 212 series with pretty tight dimensions but still has some differences. According to my experience with the product I can say that the new arrival offers a much more stylish and clean design made of shiny silver heat sink with black top fin and copper heat pipes combined with a fan entirely in black which will totally attract the attention of everybody, who looks inside the case.

According to my review, I think that Cooler Master MasterAir Pro 4 deserves the following award:

Official price (MSRP) for Cooler Master MasterAir Pro 4 : 49 euro

Official warranty: 24 months

Special thanks to Cooler Master for providing us with test samples.

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9.3 Total Score

Noise Level
Additional accessories
User Rating: 4.13 (2 votes)

Dobrin Krastev is the owner, reviewer and newsman of www.DVTests.com with more than 15 years' experience in personal computers, server and storage systems, UPS, peripheral devices and software. Passionate about testing and reviewing, AMD overclocking using AM3 990FXA and AMD FM2 A85X test systems and building modding projects.

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