The Cooler Master MasterFan A120 features an all-aluminum frame and blade design paired with a 30mm thickness to deliver 6.1 mmH2O of static pressure for demanding radiator and heatsink cooling. This heavy-duty 120mm PWM fan operates across a wide speed range from 0 to 2,500 RPM, allowing for completely silent operation at idle and high-velocity thermal dissipation under heavy workloads.

High-pressure performance engineered for dense radiators

Unlike standard 25mm case fans, the MasterFan A120 utilizes a thicker 30mm profile. This extra 5mm of depth allows for a more aggressive blade pitch and increased surface area, enabling the fan to generate an impressive 76.9 CFM of airflow and 6.1 mmH2O of static pressure. This extreme static pressure is specifically engineered to force air through high-density liquid cooling radiators and restrictive CPU heatsinks, overcoming resistance that would cause standard fans to lose efficiency. With 4-pin PWM control, the fan can scale its speed dynamically based on system temperatures, including a 0 RPM mode for silent operation during light tasks.

All-aluminum construction for zero-flex stability

Both the outer frame and the fan blades are constructed from precision-machined aluminum. At high rotational speeds up to 2,500 RPM, traditional plastic fan blades can experience microscopic flexing, which alters their aerodynamics, introduces turbulence, and increases acoustic noise. The rigid aluminum blades on this model maintain their exact shape under load, ensuring consistent airflow dynamics and reducing vibration. A high-efficiency three-phase motor drives the assembly, drawing just 2.04 W of power while minimizing electromagnetic noise. The substantial 305 g weight of the aluminum chassis further acts as a natural dampener against case resonance.

Industrial-grade lifespan with double ball bearings

To support the heavy aluminum blade assembly, Cooler Master equips this fan with a high-grade double ball bearing system. This bearing type is highly resistant to wear and allows the fan to be mounted in any orientation—vertical, horizontal, or angled—without the premature wear or oil-migration issues common to sleeve or fluid dynamic bearings. This robust mechanical design delivers an exceptional Mean Time To Failure (MTTF) of 200,000 hours, ensuring long-term reliability for continuous-duty workstations and high-performance gaming systems. This durability is backed by a comprehensive 6-year warranty.

Technical Specifications

Dimensions	120 x 120 x 30 mm
Fan Speed	0 – 2,500 ± 10% RPM
Maximum Airflow	76.9 CFM
Static Pressure	6.1 mmH2O
Noise Level	29.7 dBA
Bearing Type	Double Ball Bearing
Power Consumption	2.04 W
Warranty	6 Years