Article number: BL040


140mm PWM

Outstanding price-performance ratio

Pure Wings 2 140mm PWM fans bring famous be quiet! silent cooling to entry level computing, yet are also appropriate for gaming and multimedia systems.

  • Nine airflow-optimized fan blades reduce noise-generating turbulence
  • Long life rifle-bearing gives an operating lifetime of 80,000 hours
  • Even at maximum speed, operates at only 19.8 dB(A)
  • PWM controlled fan speed through the motherboard
  • German product conception, design and quality control
  • 3-years manufacturer’s warranty

Pure Wings 2 140mm PWM fans offer outstanding reliability and quiet operation at great price-for-performance ratio. They are the ultimate reason to put well-known be quiet! silent cooling in your PC.


Achieves a great price-for-performance ratio

The Pure Wings 2 140mm PWM fan operates at only 19.8dB(A) even at maximum speed. The perfect choice for silent home and office PCs as well as gaming and multimedia systems.


For even better cooling

Thanks to its surface-optimized fan blades the airflow is enhanced, noise-generating turbulences are minimized and the air pressure is increased. This feature is the key to effective cooling.


Varies the fan speed and noise level of the fan

Pulse Width Modulation (PWM) allows compatible 4-pin controllers - including those built into many motherboards - to intelligently vary the speed and thus the noise level of the fan. With PWM your system can ramp up the cooling when it’s needed, or operate in maximum quiet mode when it’s not. This feature especially recommends the fan for heat sinks and radiators.


Gives the fan a very long lifespan

The Pure Wings 2 140mm PWM is the hallmark of outstanding reliability. This is achieved by its high-quality rifle bearing technology, which assures a very long lifespan of up to 80,000 hours.

All models at a glance:

Product Series

General data

ModelPure Wings 2 140mm PWM
Dimensions (mm)140
Fan speed @ 100% PWM / 12V (rpm)1000
Air Flow @ 100% PWM / 12V (CFM / m3/h)61.2 / 104
Air Pressure @ 100% PWM / 12V (mm H2O)0.76
Noise level @ 100% PWM / 12V (dB(A))19.8
Color optionBlack


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Mechanical specifications

Dimensions (L x W x H), (mm)140 x 140 x 25
Bearing technologyRifle
Motor technology4-pole fan motor
Weight incl. fixed cables (kg)0.158
Push pin fixing-
Screw fixing

Cables / Connectors

Y-cable for lighting signal-
Lighting connector-
Connector4-pin PWM
Cable length (mm)460
Cable sleeve-

Performance / Noise

Air Flow @ 100% PWM / 12V (CFM / m3/h)61.2 / 104
Air Pressure @ 100% PWM / 12V (mm H2O)0.76
Noise level @ 100% PWM / 12V (dB(A))19.8
Lifespan (h / 25°C)80,000

Electrical specifications

Rated Voltage DC (V)12
Operating Voltage DC (V)5 - 12
Current consumption (A)0.09
Safety current (A)0.3
Input power (W)3.6
Rated Current LED (A)-


3-pin to 4-pin 12V-connector-
12V to 7V adapter-
12V to 5V adapter-
Push pins-
Silica gel washer-

Safety certification

ApprovalsCE / TÜV / UL


Warranty (Years)3
International hotline / free of charge✓ / DE, FR

Logistics data, RRP

Article numberBL040
EAN code4260052184417
Dimensions, package (L x W x H), (mm)175 x 140 x 28
Gross weight, package (kg)0.188
Pieces per packaging unit72
Dimensions, shipping box (L x W x H), (mm)460 x 380 x 340
Gross weight, shipping box (kg)15
RRP (€)13.90

Pure Wings 2 | 140mm PWM
Article number: BL040