Cooler Master is a name synonymous with mainstream cooling products ranging from heatpipe air towers to high-performance liquid cooling AIOs, many with RGB lighting in the center. However, the large double-fan MasterAir MA624 Stealth is ready to impress while being completely devoid of accents of light. Instead, it comes in an all-black color scheme for an imposing look for those who prefer their flair without the flash. It also uses a clever integrated mounting and includes a third (bonus!) 120mm fan for a bit more flexibility for systems with large memory DIMMs.
Striking an attractive balance somewhere between thermal constraint and aesthetic prominence, the Cooler Master MasterAir MA624 Stealth is a sharp-looking performer.
|Height||6.5″ / 165.1mm|
|Width depth||5.88″ / 149.4mm|
|Depth||5.0″ / 127.0mm (6.125″ / 155.6mm w/fan)|
|Base height:||1.25″ / 31.8mm”|
|Assy. offset||0.0 (centered), 1.125″ / 28.6mm with front fan)|
|fans||(2) 140 x 25mm|
|(1) 120 x 25mm|
|Connectors||(2) 4-pin PWM|
|Weight||46.3oz / 1312g|
|Intel sockets||1366, 115x, 1200, 2011x, 2066|
|AMD sockets||FM2(+), FM1, AM2(+), AM3(+), AM4|
Cooler Master’s MasterAir MA624 Stealth comes with a healthy installation kit that supports almost all current generation Intel and AMD desktop processors – with the exception of Threadripper silicon. Mounting hardware includes gold-plated brackets, spacers, and turnbuckles, as well as a universal backplate. A tube of MasterGel comes with a universal Phillips screwdriver and a 2-way PWM fan splitter.
Cooler Master covers the MasterAir MA624 Stealth with a 5-year warranty.
The MasterAir MA624 Stealth uses six copper heatpipes, which run from the base to the top through a pair of cooling fin stacks, which sit over an integrated 140mm SickleFlow fan covered under a brushed aluminum top. A pair of spring loaded mounting bolts extend from the top of the cooler down through the base mount to secure the cooler to the motherboard cross braces.
Cooler Master includes a pair of 140mm SickleFlow fans (center + front) and an additional 120mm for alternative setups. This allows the MA624 Stealth to function as a quiet single fan (center) setup for maximum memory space, or in the standard push+pull installation using the 140mm SickleFlow fan on the front.
Swapping the click brackets to the additional 120mm SickleFlow fan allows for more memory space while still allowing for a push + pull setup. The additional 120mm or 140mm fan can be used for push+pull+pull cooler setup (with an additional fan mount), or as a chassis fan for airflow elsewhere.
Cooler Master rates the 140mm fans up to 1400 RPM, while the 120mm is expected to reach speeds of up to 1800 RPM.
The base of the Cooler Master MasterAir MA624 Stealth lays all six copper heatpipes between the mounting block and the 40mm x 40mm milled cooler cold plate.
The cold plate is milled flat and shows no signs of backlight peeking between the cooler and our steel ruler.
From this point of view, the integrated mounting arms and spring tension screws are easy to see, while the centrally mounted 140mm SickleFlow fan sits in a clever notch in the mounting system.
Even tension creates an evenly distributed thermal composition, which compresses and disperses our application of Arctic MX-4 during installation.
Mounting the Cooler Master MasterAir MA624 Stealth is relatively easy: once the backplate or the correct offsets are secured, the motherboard cross assemblies are laid on top and then tensioned in place. The pair of vertical spring tension screws align over the cross fasteners, which align directly over the threaded holes below. Only a single fan (center mount) is complete, or the 140mm (or 120mm) pre-mount can be clipped onto the front of the MA624 Stealth to complete the standard push+pull installation.