be quiet! Silent Wings 4 140mm PWM Case Fan - Black, 1100 RPM, FDB (Boxed)
140mm be quiet! Silent Wings 4 PWM case fan: 4-pin, FDB bearing, 250-1100 RPM, 13.6 dB(A), 51.3 CFM, 0.92 mmH2O pressure. Anti-vibration mounts, 300k hr MTBF, 0.5m cable. Ideal for silent high-end PC builds.
Please Note
The website is currently being actively developed, you are welcome to place the order and in 99% of the cases your order will be processed as usual, but in some cases there may be a delay or the price may change. We will notify you if there are any issues.
Discontinued
This item was discontinued and currently is not available for order on our website. The item may become available soon. Please contact us if you need more information regarding the upcoming arrivals.
| Cooling (CPU & Case) - Device Type | Case Fan |
|---|---|
| Cooling (CPU & Case) - Fan Size | 140 mm |
| Cooling (CPU & Case) - Lightning | None |
| Cooling (CPU & Case) - Connector | 4-Pin PWM |
| Cooling (CPU & Case) - Color | Black |
| Cooling (CPU & Case) - Special Features | Low Noise |
Ultimate silence meets top performance
The be quiet! Silent Wings 4 140mm PWM fan delivers whisper-quiet operation with impressive airflow, thanks to its 6-pole motor, optimized blades, and fluid dynamic bearing. Rated at just 13.6 dB(A) max, it's perfect for high-end cases, radiators, and heatsinks where noise is unacceptable.
Featuring anti-vibration mountings to eliminate resonance, 4-pin PWM for precise speed control (250-1100 RPM), and a durable 300,000-hour lifespan. Includes both silicone pads and hard clips for versatile installation in any PC chassis.
- ✅ Extremely low noise: 13.6 dB(A) at full speed
- ✅ High airflow: 51.3 CFM / 87.16 m³/h
- ✅ Static pressure: 0.92 mmH2O for radiators
- ✅ 5-year warranty and made in China
- ✅ Black frame with 0.5m cable
| Suitable location | Computer case |
| Type | Fan |
| Fan diameter | 14 cm |
| Rotational speed (max) | 1100 RPM |
| Rotational speed (min) | 250 RPM |
| Noise level (high speed) | 13.6 dB |
| Maximum airflow | 51.3 cfm |
| Airflow | 87.16 m³/h |
| Maximum air pressure | 0.92 mmH2O |
| Pulse-width modulation (PWM) support | Yes |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Quantity per pack | 1 pc(s) |
| Mean time between failures (MTBF) | 300000 h |
| Product colour | Black |
| Fan connector | 4-pin |
| Certification | CE / ROHS / RU / UKCA / TÜV / WEEE |
| Power consumption (typical) | 3.6 W |
| Voltage | 5 - 13.2 V |
| Rated voltage | 12 V |
| Rated current | 0.3 A |
| Maximum current | 0.33 A |
| Width | 140 mm |
| Depth | 140 mm |
| Height | 25 mm |
| Weight | 220 g |
| Cable length | 0.5 m |
| Package width | 156 mm |
| Package depth | 206.5 mm |
| Package height | 31 mm |
| Package weight | 387 g |
| Screws included | Yes |
| Number of screws | 4 |
| Number of clips | 4 |
| Country of origin | China |
| Warranty | 5 years |
| Manufacturer Part Number (MPN) | BL099 |