be quiet! Silent Wings 4 120 PWM High-Speed (BL094)

be quiet! Silent Wings 4 120 PWM High-Speed (BL094) is a 120 mm fan for PC cases, CPU coolers, and liquid cooling systems where high static pressure and PWM speed control are essential. The fan features a standard 120×25 mm size, black finish without lighting, and a 4-pin PWM connector for connection to the motherboard, controller, or fan hub. Maximum rotational speed reaches 2500 RPM, with airflow up to 76.7 CFM and static pressure up to 3.96 mm H2O, making it suitable not only for free case ventilation but also for dense AIO radiators and tower coolers. Noise level at maximum speed is rated at 31.2 dB(A), though actual sound levels depend on the PWM curve, filter resistance, radiator design, and case construction. The fan uses a 6-pole motor and FDB hydrodynamic bearing to reduce vibration and ensure smooth rotor operation. It features a tight gap between blades and frame, funnel-shaped outlet channels, and mounting brackets for various installation scenarios. This fan is ideal for systems where standard case fans cannot handle thermal loads or where precise cooling control through BIOS is needed.