This article covers be quiet! Shadow Wings 2 140mm 低ノイズ冷却ファン ホワイト BL090.
Overview
be quiet! is renowned for silent PC components, and the Shadow Wings 2 140mm BL090 continues that tradition. This white 140mm case fan spins at a maximum of 900 RPM while generating only 7 dB(A) of noise — barely audible in a quiet room. The fan uses optimized blades for decent airflow and includes an anti-vibration mounting system to prevent noise transmission to the case. With a rifle bearing rated for 80,000 hours of operation and a rubberized frame that further dampens vibrations, this fan is built for longevity and peace. Installation is tool-free thanks to push-pin mounts. Priced around the $30 equivalent in Japan, it fills the entry-to-mid range of silent-focused cooling. If you're building a whisper-quiet PC for an office, living room, or recording studio, the Shadow Wings 2 140mm deserves a close look.
Compatibility Guide
The fan fits any standard 140mm fan mounting point in a PC case. Its thickness is 25 mm, so it will clear most CPU coolers and GPU brackets without issue. The connector is a 3-pin header, not PWM, so speed control is via voltage (DC mode). Your motherboard must support DC fan control — many modern boards do, but you may need to enable it in the BIOS. It is not compatible with 120mm mounts. For radiator use, the static pressure is low, so it works best as a case intake/exhaust fan rather than on thick radiators.
Product Info
Released around 2019, the be quiet! Shadow Wings 2 140mm BL090 is widely available at major retailers like Japan. The price typically ranges from ¥3,000 to ¥4,000. Warranty is 3 years from the manufacturer. Market positioning sits at entry-to-mid tier — it prioritizes silence over raw airflow or static pressure. Key specs: 140mm size, 900 RPM max, 3.6 W power draw, 3-pin connector, noise level 7 dB(A) (max), and 80,000-hour bearing life.
Best Use Cases
This fan excels in silence-focused builds. If you're building a home theater PC, a server in a bedroom, or a workstation for audio recording, the Shadow Wings 2 will keep noise to a bare minimum. It is also ideal for users who want a single quiet intake or exhaust fan in a low-power system — for example, an office PC with an integrated GPU. The low RPM ensures you'll hardly notice it. Finally, if you're putting together a white-themed build with minimal RGB, the all-white aesthetic and simple design fit perfectly. Just be aware that it lacks lighting effects. ## Alternatives
For comparable silent 140mm fans, consider the Noctua NF-A14 PWM Chromax (higher price, PWM, slightly better performance) or the Fractal Design Aspect 14 (available with RGB, similar noise level but PWM). The Noctua offers more flexibility with speed control, while the Fractal adds visual flair. The Shadow Wings 2 wins on absolute silence at a lower cost, though the lack of PWM may be a drawback for some users. If you need precise speed control, step up to the be quiet! Silent Wings 3 or 4 series.
Things to Consider
The biggest limitation is the 3-pin connector. Without PWM, you can only control speed via voltage, and some motherboards lack proper DC control. In that case, the fan will run at full 900 RPM at all times — still quiet, but not adjustable. It is not suited for high-static-pressure applications like thick radiators or dense mesh panels. For those tasks, consider a fan with a higher RPM range like the Arctic P14 or Noctua NF-A14. Also note that the white color may be harder to find in stock compared to the black variant. If availability is an issue, you might have to wait for restocks. Overall, the be quiet! Shadow Wings 2 140mm BL090 is an excellent choice for anyone who values near-silent operation above all else. Just match it with the right motherboard and case for the best experience.
Product Disclosure (Amazon)
- Manufacturer: be quiet!
- Seller: Amazon US
- Fulfilled by: Amazon US
- ASIN: B07WZPY7PF
- Note: This article covers a manufacturer-made product based on Amazon listing details.
