Cooler Master MasterAir MA624 Stealth Review (Page 3 of 4)

Page 3 - Test Results

Our test configuration is as follows:

CPU: AMD Ryzen 7 3700X @ 3.6GHz
Motherboard: ASUS Prime X470-Pro
RAM: Patriot Viper RGB DDR4-3600 2x16GB
Graphics: MSI GeForce GTX 1070Ti Titanium
Chassis: Fractal Design Meshify 2 Compact
Storage: Western Digital Blue SN500 NVMe SSD 500GB, OCZ ARC 100 240GB, Patriot P200 512GB
Power: FSP Hydro PTM Pro 1200W
Operating System: Microsoft Windows 10 Pro

Compared hardware:
- Cooler Master MasterAir MA624 Stealth
- be quiet! Pure Loop 240mm
- Noctua NH-D15
- Noctua NH-L9a-AM4
- Noctua NH-U9S
- Noctua NH-U12A
- Noctua NH-U12S

All tests were run in our custom-built computer to best reflect real life performance. The computer remained in the same location in the same room throughout all tests. The room temperature in our testing lab was around 22c. Stock thermal paste respective to all coolers were used to rate its performance; all pastes were given a proper amount of time for them to fully settle. The fans on all heatsinks were directly connected to the motherboard's 4-pin connector. The test computer was turned on and idling for at least one hour for the idling tests. High CPU load results were obtained using the Prime95 in-place large FFTs test with a maximum number of worker threads for the tested CPU for a minimum of ten minutes or until the temperature was deemed stable. Temperature results were measured with HWiNFO, which reports the CPU's integrated digital thermal sensor for maximum accuracy. Each temperature result was calculated by taking the maximum value of the cores inside the CPU.

After letting my computer sit idle for a while, I shook my mouse to wake the computer to check the temperature. Cooler Master provided us with multiple fans and therefore I did test out various configurations with the MasterAir MA624 Stealth. From the first graph, you can see the MasterAir MA624 Stealth was idling at a low temperature of 33 to 34c, depending on the configuration of the attached fans. This is notably cooler than other 120mm based air coolers, and even slightly cooler than the Noctua NH-D15 and the be quiet! AIO. However, idle results do not give a full representation of what CPU coolers can do, so we started up the Prime95 tests to see the important results.

After turning on Prime95 and allowing sufficient time to load the processor on all cores and threads, you can see how each of the coolers performed with the peak temperatures. Once again, the Cooler Master MasterAir MA624 Stealth took top spots with load temperatures of around 62 to 63c. This was similar in temperature to the AIO cooler we have here, while being one to two degrees warmer than the excellent NH-D15 Compared to the smaller 120mm based air coolers like the NH-U12A, this is a couple degrees cooler, which is great to see. We were able to observe the same boost frequencies throughout the test across our tower coolers with 3.8GHz across all cores. Overall, these results show the MasterAir MA624 Stealth is more than capable of keeping up with large heatsinks or AIO liquid cooling solutions.

As for the sound analysis section of the Cooler Master MasterAir MA624 Stealth, on a scale of 0 to 10, where 0 is silence and 10 is the definition of loud, I would rate the MA624 Stealth at 3.5/10 during idle and around 5.0/10 under full load for the dual 140mm fan configuration. The SickleFlow fans are not necessarily the quietest ones, especially the smaller 120mm variant. This is because the 140mm sized fan can spin at slower speeds while still outputting more air. On a day-to-day use, the whole solution is decently quiet, but when it spins at maximum speed, the fans are definitely audible.

Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Hardware; Installation
3. Test Results
4. Conclusion