be quiet! Silent Wings Pro 4 PWM Black Fan, 140mm, 2400RPM, 4-Pin PWM Fan Connector, Black Frame, Black Blades, Optimized Fan Blades for the Highest Performance for Radiators & Heat Sinks, 3 Mounting Options, 3 Speed Switch

Name: be quiet! Silent Wings Pro 4 PWM Black Fan, 140mm, 2400RPM, 4-Pin PWM Fan Connector, Black Frame, Black Blades, Optimized Fan Blades for the Highest Performance for Radiators & Heat Sinks, 3 Mounting Options, 3 Speed Switch
Brand: BEQUIET
Price: 38.27 GBP
Availability: InStock

£38.27

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be quiet! Silent Wings Pro 4 PWM Black Fan, 140mm, 2400RPM, 4-Pin PWM Fan Connector, Black Frame, Black Blades, Optimized Fan Blades for the Highest Performance for Radiators & Heat Sinks, 3 Mounting Options, 3 Speed Switch

£38.27

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