Noctua NF-A4x20 PWM fan

Noctua NF-A4x20 PWM — Quiet and Reliable Fan

Compact system users often look for a solution that combines quiet operation, performance and long service life. The Noctua NF-A4x20 PWM is designed to meet these demanding requirements. With dimensions of 40 × 40 × 20 mm, it easily fits even in the smallest spaces, while technologies such as Flow Acceleration Channels and SSO2 bearings ensure smooth operation and high reliability. PWM control allows automatic adjustment of the rotation speed for optimal performance and quiet operation. The top static pressure of 2.26 mm H2O makes this fan an ideal choice for cooling densely packed systems.

High performance and quiet operation

The Noctua NF-A4x20 PWM reaches rotation speeds of up to 5000 rpm (±10%), providing an airflow of 9.4 m³/h. Even at maximum power, the fan maintains a noise level of just 19.6 dB(A), which is key for quiet operation in both home and professional environments. This makes it an ideal choice for systems where noise minimization is a priority.

Technology for reliability and efficiency

The fan is equipped with an advanced AAO frame and aerodynamic elements that reduce turbulence and increase efficiency. SSO2 bearings contribute to a longer lifespan and smooth operation. The combination of these technologies ensures stable performance for many years, as evidenced by the manufacturer's 6-year warranty.

Customization and compatibility

Thanks to the 4-pin PWM connector, the fan can be easily integrated into a wide range of systems and allows automatic speed control for optimal cooling. The compact design and high static pressure ensure that the fan is suitable even for densely packed cabinets and devices where cooling is a challenge. 12 V voltage support ensures compatibility with most standard power supplies.

Technical data

• Dimensions: 40 × 40 × 20 mm
• Speed: 5000 rpm (±10%)
• Airflow: 9.4 m³/h
• Static pressure: 2.26 mm H2O
• Noise: 19.6 dB(A)
• Voltage: 12 V
• Connector: 4-pin PWM
• Color: Brown

Package contents

• Anti-vibration mounts
• Screws