The be quiet! Silent Wings 4 140mm focuses on low noise output, while keeping performance at decent levels. You cannot expect of course from a silent fan to offer top airflow and static pressure, some compromises have to be made.
The be quiet! Silent Wings 4 line consists of high-quality fans, focusing on low noise output. The noise output remains low thanks to the 6-pole fan motor, the fluid dynamic bearing, and the low rotational speeds. be quiet! suggests these fans for radiators, heatsinks, and cases despite the low speeds. After I have finished all testing sessions, I will have a clear image of their performance, so it will be easy to suggest the best usage scenarios.
There are two major lines: Silent Wings Pro 4 and Silent Wings 4. The first comes in two flavors, 140mm, and 120mm, while the last comes in six versions:
- 140mm PWM high-speed
- 140mm PWM
- 140mm
- 120mm PWM high-speed
- 120mm PWM
- 120mm
I will check the Silent Wings 4 140mm PWM in this review, which can spin up to 1100 RPM only, while its high-speed sibling can go up to 1900 RPM, making it more suitable for cooling solutions.
Cybenetics Fans Database
- Model Name: Silent Wings 140mm PWM
- Fan Speed PWM: 250 – 1170 RPM
- Fan Airflow: 51.3 CFM
- Static Pressure: 0.92 mm-H2O
- Fan Noise Level: 13.6 dBA (Max)
- Bearing durability: 300,000 hrs@ 25℃
- Fan Bearing Type: Rifle Bearing
- Fan Connector: 4-Pin PWM
- Operating Voltage: 5 – 13.2 VDC
- Fan Rated Voltage: 12 VDC
- Fan Rated Current: 0.12A
- Fan Rated Wattage: 1.44W
- Fan Weight: 220gr
- Dimensions (W x H x D): 140 x 140 x 25mm
- Daisy-Chain Capable: No
- Cable length: 500mm
- Connector: 4-Pin PWM
- Price (excluding VAT): 24.9€ / $24.9
- Warranty: 5-years
On page 5, the 4th graph/image (static pressure) has an error, the 60% line reads 90%
That is all.
Thanks!!