be quiet! Silent Wings 4 140mm PWM White Cooling Fan

be quiet! Silent Wings 4 140mm PWM White Cooling Fan

FEATURES

• The be quiet! Silent Wings 4 140mm PWM High-Speed White (BL117) is a premium high-performance PC cooling fan designed for gaming PCs, enthusiast systems, workstations and custom PC builds. Combining strong airflow, high static pressure, advanced bearing technology and a clean white finish, the Silent Wings 4 BL117 is suitable for use as a case fan as well as for demanding radiator and heatsink applications.
• With a maximum rotational speed of 1900 RPM, the BL117 delivers airflow of up to 78.4 CFM / 133.2 m³/h and air pressure of up to 2.36 mmH₂O. This combination makes the fan suitable for systems that require effective heat dissipation and focused airflow. It can be used for general PC case ventilation or installed on compatible radiators and heatsinks where stronger airflow is required.
• The Silent Wings 4 features specially optimized fan blades and a reduced distance between the blades and the fan frame. The funnel-shaped air outlet is designed to improve air pressure and help direct airflow efficiently. These design features allow the fan to deliver high cooling performance while maintaining a controlled acoustic profile.
• For smooth and reliable operation, the BL117 uses a Fluid Dynamic Bearing (FDB) combined with a 6-pole fan motor. The motor design helps reduce vibration and power consumption, while the high-quality bearing is rated for an operating lifespan of up to 300,000 hours at 25°C.
• The fan uses a standard 4-pin PWM connector, allowing compatible motherboards and fan controllers to regulate the fan speed according to system temperature and workload. At maximum speed, the BL117 has a rated noise level of only 29.3 dB(A), making it suitable for users who want a balance between strong cooling performance and quiet PC operation.
• Installation is flexible, with both push-pin and screw mounting options included. The package contains four mounting screws, four push pins and the required mounting hardware. The fan also incorporates anti-vibration features to help reduce vibration transfer between the fan and PC components.
• The white color makes the Silent Wings 4 BL117 particularly suitable for modern white gaming PCs, clean workstation builds and showcase systems. Its 140mm form factor provides a larger airflow area than typical 120mm fans while maintaining a slim 25mm thickness.
• Overall, the be quiet! Silent Wings 4 140mm PWM High-Speed White BL117 combines high airflow, strong static pressure, PWM control, FDB bearing technology, long operating life and a premium white design, making it a versatile cooling solution for modern high-performance desktop computers.

SPECIFICATIONS

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