be quiet! Silent Wings Pro 4 140mm PWM Fan
Legendary silence, epic performance, and premium features.
Silent Wings Pro 4 140mm PWM is the most progressive, high-performance and versatile 140mm fan from be quiet!, engineered for top-tier cooling with exceptionally low noise.
Key Features
- Newly developed, optimized fan blades for outstanding performance on radiators and heat sinks
- Integrated speed switch with 3 modes:
- Medium-speed
- High-speed
- Ultra-high-speed (up to 2400 rpm)
- Extremely small tip clearance and funnel-shaped fan frame for very high air pressure
- Virtually inaudible operation at regular speed
- 6-pole fan motor with fluid-dynamic bearing for less vibration and smooth, quiet operation
- Three individual mounting systems for case, radiator, or general use
- 5-year manufacturer warranty
New-Generation Blade Design
Silent Wings Pro 4 140mm PWM features a completely redesigned blade arrangement developed from scratch. This new geometry delivers:
- Performance tailored for multiple applications
- Outstanding efficiency in PC cases, on radiators, and on heat sinks
Optimized for High-End Performance
Minimum distance, maximum air pressure.
A significantly reduced distance between the fan blades and the frame allows:
- Extraordinary air pressure
- A substantial increase in overall system performance
- Reliable cooling for even the most demanding applications
The funnel-shaped air outlet in the fan frame further enhances pressure and airflow.
Adjustable Speed Switch
Three speed profiles for any scenario.
With a simple slide of the integrated speed switch, you can quickly select:
- Medium-speed – Ideal for regular cooling performance and quiet operation
- High-speed – Increased fan speed for more cooling power
- Ultra-high-speed – Up to 2400 rpm to cool demanding, high-end PC hardware
6-Pole Fan Motor
Quiet when needed, powerful when required.
The advanced 6-pole motor with 3 phases provides:
- Very low power consumption
- Reduced vibration
- Quiet maximum operation of 36.8 dB(A)
When operated at medium speed, the fan is virtually inaudible.
Three Mounting Options Included
Versatile installation for every build.
Silent Wings Pro 4 140mm PWM comes with 3 different mounting options:
- Pre-installed radiator corners – Specially designed for use on radiators, where the fan’s high performance truly shines
- Anti-vibration mountings – Optimal for chassis installation, minimizing vibrations
- Plastic mountings – Complete the mounting options for flexible use
Fluid-Dynamic Bearing
Engineered for longevity and smooth operation.
Equipped with an advanced fluid-dynamic bearing (FDB), this fan offers:
- Fan life of up to 300,000 hours
- Significantly reduced vibrations
- Support for virtually inaudible operation
Elegant, All-Black Aesthetics
The Silent Wings Pro 4 140mm PWM stands out with:
- All-black design
- High-grade fan sticker
- Finely sleeved PWM cable
The PWM cable not only adds to the premium look but also allows the connector to be plugged in and out with ease, making the fan both eye-catching and user-friendly.
Specifications
General Data
| Parameter | Value |
|---|---|
| Model | Silent Wings Pro 4 140mm PWM |
| Dimensions (mm) | 140 |
| Color option | Black |
| Lighting | - |
| Fan speed @ 100% PWM / 12V (rpm) | 2400 |
| Noise level @ 100% PWM / 12V (dB(A)) | 36.8 |
| Air flow @ 100% PWM / 12V (CFM / m³/h) | 97.41 / 165.5 |
| Air pressure @ 100% PWM / 12V (mm H₂O) | 3.64 |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (L x W x H) (mm) | 140 x 140 x 25 |
| Weight incl. fixed cables (g) | 258 |
| Bearing technology | FDB |
| Motor technology | 6-pole fan motor |
| Push pin fixing | Yes |
| Screw fixing | Yes |
Cables / Connectors
| Parameter | Value |
|---|---|
| Daisy chain for lighting | - |
| Lighting connector | - |
| Connector | 4-pin PWM |
| Cable length (mm) | 500 |
| Cable sleeve | Yes |
Performance / Noise
| Parameter | Value |
|---|---|
| Air flow @ 100% PWM / 12V (CFM / m³/h) | 97.41 / 165.5 |
| Air pressure @ 100% PWM / 12V (mm H₂O) | 3.64 |
| Noise level @ 100% PWM / 12V (dB(A)) | 36.8 |
| Lifespan (h / 25°C) | 300,000 |
Electrical Specifications
| Parameter | Value |
|---|---|
| Rated voltage DC (V) | 12 |
| Operating voltage DC (V) | 7 – 13.2 |
| Current consumption (A) | 0.50 |
| Safety current (A) | 0.50 |
| Input power (W) | 6.0 |
| Rated current LED (A) | - |
Accessories
| Accessory | Included |
|---|---|
| 3-pin to 4-pin 12V-connector | - |
| 12V to 7V adapter | - |
| 12V to 5V adapter | - |
| Screws | 4 |
| Push pins | 4 |
| Hard plastic washer | - |
| Others | - |
Safety Certification
| Parameter | Value |
|---|---|
| Approvals | CE / RoHs / RU / UKCA / TUV / WEEE |
Environmental Directives
| Parameter | Value |
|---|---|
| RoHs | - |
| Triman | - |
Logistics Data
| Parameter | Value |
|---|---|
| Article number | BL099 |
| Package dimensions (L x W x H) (mm) | 206.5 x 156 x 31 |
| Gross weight, package (kg) | 0.448 |
