be quiet! SILENT WINGS 4 140mm Fan
£21.11 inc VAT
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About This Item
- 14 cm PWM high-speed fan for computer cases
- Fluid Dynamic Bearing for quiet, long-lasting operation
- Maximum airflow 78.4 cfm with 1900 RPM speed
- Noise level only 29.3 dB at high speed
- 4-pin connector with 0.5 m cable for easy installation
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be quiet! Silent Wings 4 | 140mm PWM High-Speed Fan
The be quiet! Silent Wings 4 | 140mm PWM high-speed Computer case Fan 14 cm Black 1 pc(s) delivers exceptional cooling performance with near-silent operation. Designed for high-end systems where noise reduction and airflow are equally critical, this fan combines advanced engineering with premium build quality.
Key Specifications
| Metric | Spec |
|---|---|
| Fan Diameter | 140 mm |
| Maximum Airflow | 78.4 cfm |
| Maximum Air Pressure | 2.36 mmH2O |
| Bearing Type | Fluid Dynamic Bearing (FDB) |
| PWM Support | Yes |
| Noise Level (High Speed) | 29.3 dB |
| MTBF | 300,000 hours |
Engineered for Ultimate Silence and Performance
The Silent Wings 4 series features a 6-pole motor that provides smooth, efficient operation while minimising vibration. Combined with anti-vibration mounting pads, this design eliminates the humming and rattling common in lesser fans. The optimised fan blade geometry maximises airflow without increasing rotational speed, ensuring your system stays cool without the noise penalty.
Fluid Dynamic Bearing for Exceptional Longevity
Unlike standard sleeve or ball bearings, the Fluid Dynamic Bearing technology in this fan uses a thin layer of lubricant to reduce friction and wear. This results in a Mean Time Between Failures (MTBF) of 300,000 hours – equivalent to over 34 years of continuous operation. For UK PC builders and system integrators, this translates to years of maintenance-free cooling.
Versatile Installation Options
The 140mm form factor makes this fan suitable for both intake and exhaust configurations in standard ATX cases. The 4-pin PWM connector allows precise speed control based on temperature, automatically adjusting between whisper-quiet idle operation and maximum cooling under load. Whether you’re building a gaming rig, workstation, or home media centre, this fan adapts to your cooling needs.
Box Contents
- 1 x be quiet! Silent Wings 4 140mm PWM high-speed fan
- 4 x mounting screws
- 4 x anti-vibration rubber pads
Check Before You Buy
- Confirm your case has a 140mm mounting point available
- Verify your motherboard has a spare 4-pin fan header
- Check clearance if installing in tight spaces near RAM or CPU coolers
- Ensure your power supply can provide the 4.8W maximum draw
Common questions
Is this fan suitable for radiator mounting?
What’s the difference between PWM and voltage control?
Can I connect multiple fans together?
How does the noise level compare to standard case fans?
What warranty coverage applies in the UK?
Our take
The be quiet! Silent Wings 4 140mm PWM high-speed fan represents an excellent choice for UK PC enthusiasts who refuse to compromise between cooling performance and acoustic comfort. Its combination of advanced bearing technology, intelligent speed control, and anti-vibration design makes it particularly suited for high-end gaming systems, professional workstations, and silent home theatre PCs. The 300,000-hour MTBF rating provides exceptional long-term reliability, while the PWM functionality ensures optimal thermal management across all usage scenarios. Covered by the applicable manufacturer warranty, this fan delivers premium German engineering for discerning UK builders.
| Weight | 0.4 kg |
|---|---|
| Certification | CE, ROHS, RU, UKCA, TÜV, WEEE |
| Suitable location | Computer case |
| Pulse-width modulation PWM support | Yes |
| Rotational speed max | 1900 RPM |
| Bearing type | Fluid Dynamic Bearing (FDB) |
| Quantity per pack | 1 pc(s) |
| Noise level high speed | 29.3 dB |
| Type | Fan |
| Fan diameter | 14 cm |
| Maximum airflow | 78.4 cfm |
| Maximum air pressure | 2.36 mmH2O |
| Airflow | 133.2 m³/h |
| Fan connector | 4-pin |
| Rated voltage | 12 V |
| Voltage | 5 – 13.2 V |
| Rated current | 0.4 A |
| Power consumption typical | 4.8 W |
| Maximum current | 0.4 A |
| Product colour | Black |
| Width | 140 mm |
| Depth | 140 mm |
| Height | 25 mm |
| Weight | 220 g |
| Cable length | 0.5 m |
| Mean time between failures MTBF | 300000 h |
| Package depth | 206.5 mm |
| Package width | 156 mm |
| Package height | 31 mm |
| Package weight | 390 g |
| Screws included | Yes |
| Number of screws | 4 |
| Number of clips | 4 |
| Country of origin | China |
| Shipping inner case width | 31.7 cm |
| Shipping inner case length | 46.3 cm |
| Shipping inner case height | 38.8 cm |
| Shipping inner case gross weight | 13.7 kg |
| Products per shipping inner case | 32 pc(s) |
| Harmonized System HS code | 84733080 |
| Distributor SKUs | FABEQ-BL097, CF18056, 574047, STD10229217 |
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