be quiet! 140mm Silent Fan Black

be quiet! Silent Wings Pro 4 | 140mm PWM Fan

The be quiet! Silent Wings Pro 4 140mm PWM Computer case Fan delivers exceptional cooling performance with near-silent operation, making it ideal for high-performance PC builds where noise reduction is critical. This German-engineered 140mm fan combines advanced fluid dynamic bearing technology with optimized blade design to provide superior airflow while maintaining whisper-quiet operation.

Key Specifications

Advanced Cooling Performance

The Silent Wings Pro 4 features specially optimized fan blades designed for maximum static pressure, making it particularly effective when used with radiators and heatsinks. The fluid dynamic bearing ensures smooth, quiet operation while extending the fan’s lifespan to an impressive 300,000 hours. With a maximum airflow of 97.41 CFM and air pressure of 3.64 mmH2O, this fan provides exceptional cooling performance for demanding systems.

Precision Speed Control

Equipped with PWM support and a three-position speed switch, the Silent Wings Pro 4 offers complete control over your cooling solution. Users can select between Silent, Standard, and Performance modes to balance noise levels with cooling requirements. The 4-pin connector ensures compatibility with modern motherboards for automatic speed control based on system temperature.

Premium Build Quality

Manufactured in Germany, this fan demonstrates be quiet!’s commitment to quality with robust construction and attention to detail. The black finish complements any build aesthetic, while the 0.5m cable length provides adequate reach for most installations. With dimensions of 140 x 140 x 25mm and a weight of 258g, it’s designed to fit standard 140mm mounting points in computer cases.

What Is in the Box

• 1 x be quiet! Silent Wings Pro 4 140mm PWM Fan
• 4 x Screws
• 4 x Clips

Before you order

• Confirm your case has 140mm fan mounting points
• Verify your motherboard supports 4-pin PWM fans
• Check available clearance for 25mm fan depth
• Ensure your power supply can provide 12V at 0.5A

Buyer FAQs

Q: What makes this fan quieter than standard fans?

A: The fluid dynamic bearing and optimized blade design reduce turbulence and vibration, resulting in lower noise levels even at high speeds.

Q: Can I use this fan with a 3-pin connector?

A: No, this fan requires a 4-pin PWM connector for proper operation and speed control.

Q: What is the maximum RPM of this fan?

A: The maximum rotational speed is 2400 RPM when operating at full power.

Q: Is this fan suitable for radiator mounting?

A: Yes, the optimized blade design and high static pressure make it excellent for radiator and heatsink applications.

Q: How long is the warranty period?

A: This product is covered by the applicable manufacturer warranty.

Expert verdict & warranty

The be quiet! Silent Wings Pro 4 140mm PWM represents the pinnacle of quiet cooling technology for enthusiasts and professionals who demand both performance and silence. Its combination of German engineering, fluid dynamic bearing, and intelligent speed control makes it an excellent choice for high-end gaming rigs, workstation builds, or any system where noise reduction is paramount. The 300,000-hour MTBF rating ensures long-term reliability, while the three-speed control options provide flexibility for different usage scenarios. Covered by the applicable manufacturer warranty, this fan delivers premium cooling performance without the premium noise levels.