be quiet! Silent Wings 4 120mm PWM Fan

be quiet! Silent Wings 4 | 120mm PWM Fan

The be quiet! Silent Wings 4 120mm PWM Computer case Fan delivers virtually inaudible operation with extreme performance for high-end systems. Featuring a 6-pole motor and anti-vibration mountings, this fan combines advanced engineering with optimised blade design to achieve maximum airflow without the noise penalty.

Quick Specs

Whisper-Quiet Performance for Demanding Systems

The Silent Wings 4 series sets a new benchmark for quiet computing. Its 6-pole motor design provides smoother operation and reduced vibration compared to standard 4-pole designs, while the Fluid Dynamic Bearing ensures silent, long-lasting performance. The anti-vibration rubber corners eliminate transfer of motor noise to your case, making this fan virtually undetectable even at maximum speed.

Engineered Airflow for Maximum Cooling

Optimised fan blades create superior static pressure and airflow efficiency. With 48.7 CFM of maximum airflow and 1.79 mmH2O of pressure, this 120mm fan handles both high-airflow and high-pressure applications. Whether you’re cooling a CPU heatsink, GPU, or creating positive case pressure, the aerodynamic design maintains excellent performance across the entire speed range.

PWM Control for Intelligent Speed Management

Pulse Width Modulation support allows your motherboard to control fan speed dynamically based on system temperature. This means the fan runs at minimal RPM during light loads for near-silent operation, then ramps up automatically when cooling demands increase. The 4-pin connector ensures full compatibility with modern PWM fan headers.

Box Contents

• be quiet! Silent Wings 4 120mm PWM Fan
• 4 mounting screws
• 4 anti-vibration rubber clips

Check before you buy

• Confirm your case has a 120mm fan mounting point
• Verify your motherboard has a 4-pin PWM fan header
• Check clearance around the mounting location (25mm depth)
• Ensure your system can supply 12V DC power

Frequently Asked Questions

Q: What makes this fan quieter than standard fans?

A: The 6-pole motor, Fluid Dynamic Bearing, and anti-vibration rubber corners work together to minimise noise across all operating speeds.

Q: Can I use this fan without PWM control?

A: Yes, the fan will run at full speed when connected to a standard 4-pin connector, though PWM control is recommended for optimal noise performance.

Q: How long will this fan last?

A: With a 300,000-hour Mean Time Between Failures rating, this fan is designed to operate for many years under normal conditions.

Q: Is this fan suitable for radiator mounting?

A: Yes, the high static pressure rating makes it ideal for radiator and heatsink applications where pushing air through restrictive surfaces is required.

The Consultant’s Verdict & Warranty

The be quiet! Silent Wings 4 120mm PWM represents the pinnacle of quiet cooling technology, perfect for enthusiasts building silent high-performance systems. Its combination of advanced motor design, premium bearing technology, and intelligent speed control delivers exceptional cooling without the acoustic penalty. Covered by the standard Manufacturer Warranty.