be quiet! SILENT WINGS 4 140mm Fan

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

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

Frequently Asked Questions

Q: Is this fan suitable for radiator mounting?

A: Yes, the 140mm size fits most standard 140mm radiators, though clearance with other components should be verified.

Q: What’s the difference between PWM and voltage control?

A: PWM provides more precise speed control and better efficiency than voltage control, allowing automatic adjustment based on system temperature.

Q: Can I connect multiple fans together?

A: Yes, you can daisy-chain fans using a fan splitter or hub, but ensure your motherboard can supply sufficient current for all connected fans.

Q: How does the noise level compare to standard case fans?

A: At 29.3 dB maximum, this fan is significantly quieter than most standard 140mm fans, which often exceed 35 dB at full speed.

Q: What warranty coverage applies in the UK?

A: This product is covered by the standard Manufacturer Warranty. Check with your retailer for specific terms.

The Consultant’s Verdict & Warranty

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 standard Manufacturer Warranty, this fan delivers premium German engineering for discerning UK builders.