be quiet! Silent Wings 4 PWM Fan, Fluid Dynamic Bearing, 140mm, Black

This 140mm high-speed fan is engineered for system builders requiring significant thermal dissipation on demanding components. It achieves a maximum rotational speed of 1900 RPM, delivering an airflow rate of 133.2 m³/h (78.4 CFM). The fan's blade and frame design produce a high static pressure of 2.36 mmH2O, making it particularly effective for integration with liquid cooling radiators and dense CPU heatsinks, ensuring efficient heat removal under continuous heavy load conditions.

Operational control is managed via a 4-pin PWM connector, allowing for precise speed adjustment down to 0 RPM when thermal conditions permit, optimizing both cooling and noise output. The fan utilizes a robust Fluid Dynamic Bearing (FDB) technology, specified for smooth operation and minimal friction within the fan motor. This bearing configuration contributes to an exceptionally long mean time between failures (MTBF) rated at 300,000 hours, supporting long-term reliability in high-performance computing environments. Despite its high performance capabilities, the fan maintains a measured maximum noise output of 29.3 dB.

• 140 mm diameter standard frame size
• Rotational speed range from 0 RPM to 1900 RPM
• Static pressure rating of 2.36 mmH2O
• Utilizes a Fluid Dynamic Bearing (FDB) design
• Maximum noise generation of 29.3 dB
• Operates via 4-pin PWM connector
• Mean Time Between Failures (MTBF) rated at 300,000 hours
• Includes mounting hardware and a 0.5-meter connection cable
• Compliant with CE, UL, UKCA, TUV, and RoHS standards