be quiet! Silent Wings 4 120mm PWM (BL093)
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Multifunctional low-speed, low-noise premium class 120 mm fan with a 4-pin connector for connecting to a motherboard. Compared to the similar third-generation model (Silent Wings 3), it shifts the focus from exceptional silence to a balance between acoustic comfort and adequate static pressure, making the model more versatile than its predecessors. Positioned as a high-end product designed for use in tower-type CPU coolers.
It can also be installed on liquid cooling system radiators and in cases. The high resource allows the be quiet! Silent Wings 4 120mm PWM fan to be installed in demanding professional equipment. It features an original exterior design, an expanded package with interchangeable anti-vibration corners, and long-lasting fluid dynamic bearings with a screw thread and specially shaped blades, resulting in more efficient airflow that maintains acoustic comfort. The device's lifespan is an incredible 300,000 hours. Pulse-width modulation allows compatible controllers (including those used on motherboards) to intelligently regulate the fan speed and noise level. Thanks to PWM, the system can automatically increase the speed when necessary or reduce it to ensure silent PC operation.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog be quiet! 2026 - new arrivals, bestsellers, and the most relevant models be quiet!.
Quiet, VERY quiet, compared to Silent Wings 3 better (subjectively) air pressure Skoda, you have to pay a lot of pennies for the quality |
The Silent Wings 4 120mm PWM is a fan chosen when controlled airflow and stable acoustics are needed. The airflow is dense with normal static pressure, making it equally suitable in a case, on a tower cooler, and on an AIO radiator. On a radiator, it effectively pushes through the fins, and inside a case, it really helps with temperature, rather than just creating a noisy background. In terms of sound, it's even, without rattling, whistling, or parasitic tones. Even at higher speeds, the noise remains soft and not annoying. The three-phase motor with six coils performs well here — the fan doesn't fluctuate in speed and doesn't resonate. The variable corner system is well-designed. Some corners are for classic screw mounting, while others are for screwless installation. Both options are anti-vibration, so it doesn't matter where it's placed — on a case or radiator, it doesn't add extra vibrations. Overall, this is a versatile 120mm fan with an emphasis on stability, acoustics, and quality build. It’s not a "toy for RGB builds" but a solid working component for a quiet and well-cooled system. Quiet, powerful, quality materials, top-of-the-line motor, braided cable Zhodnikh  Reverse_rain: use be quiet! Silent Wings 4 120mm PWM more than year |
be quiet! Silent Wings 4 120mm PWM configurations
| Price for be quiet! Silent Wings 4 120mm PWM | ||||
|---|---|---|---|---|
 | be quiet! Silent Wings 4 120mm PWM | from $24.90 | 1 offer | |
 | be quiet! Silent Wings 4 120mm PWM White | from $24.90 | 1 offer | |
 | be quiet! Silent Wings 4 140mm PWM | from $24.90 | 1 offer | |
 | be quiet! Silent Wings 4 140mm PWM White | from $24.90 | 1 offer | |
I don't recommend this to people who want just one expensive fan in the case just for the sake of it. Either get a few and build a quiet system or go for something simpler and don't throw money into... the wind lol.
If anyone starts adding comments like "I have $3 fans and they are quiet," know this – if you had something to compare with, you wouldn't say so. I've had both Arctic P/F and relatively cheap Noctua Redux. The first ones start knocking after a week, and the latter vibrate and hum like an airplane.
For those choosing between the regular version and High Speed, know that with the high-speed version you get Be but not Quiet. I don't know about the fourth generation, but the Silent Wings 3 High Speed were noisier compared to the regular Silent Wings 3 at the same speeds and the coils whined at low RPM in cooler PWM modes.