120 mm Fan Noctua NF-A20 FLX 200 mm, 12 V, 800 RPM max, 146.9 m³/h, 18.1 dB

The Noctua NF-A20 FLX is a premium 200 mm computer fan engineered for high airflow with low noise. It combines Noctua's Advanced Acoustic Optimisation (AAO) frame and Flow Acceleration Channels with a refined aerodynamic design and a reference-class SSO2 bearing to deliver smooth, reliable operation. The FLX variant includes a Low-Noise Adaptor that provides reduced-speed options for quieter performance or higher ventilation as needed.

Advantages

The NF-A20 FLX offers a balanced combination of efficient airflow (up to 146.9 m³/h) and low maximum speed (800 RPM), allowing effective cooling with minimal acoustic impact. Its AAO frame and Flow Acceleration Channels reduce turbulence and improve static pressure, while the SSO2 bearing ensures long-term smoothness and reliability. The included Low-Noise Adaptor enables flexible speed control for either near-silent operation or increased ventilation.

Suitable for

• PC case cooling for mid-tower and full-tower builds
• Radiator or large-area heat dissipation where a 200 mm fan fits
• Systems requiring quiet operation with reliable airflow

Key specifications

• Model: Noctua NF-A20 FLX
• Fan diameter: 200 mm
• Dimensions: 200 mm x 30 mm x 200 mm
• Maximum speed: 800 RPM (with LNA); standard second speed 550 RPM via adaptor
• Airflow: 146.9 m³/h
• Max. static pressure: 1.08 mmH2O
• Rated voltage: 12 V
• Colour: Beige and Brown

How to use

Mount the NF-A20 FLX in a compatible 200 mm fan location using the appropriate screws or anti-vibration mounts. Connect the 3-pin power cable to a 12 V fan header on the motherboard or to a compatible fan controller. If lower noise is desired, attach the supplied Low-Noise Adaptor to reduce the fan speed; remove the adaptor or bypass it for the higher speed setting. Ensure the fan orientation matches the intended airflow direction for intake or exhaust.

Recommendations

For optimal results, use the NF-A20 FLX in cases or radiators that support 200 mm fans and pair it with a system layout that benefits from larger, slower-spinning fans. Regularly check and clean the fan to maintain performance and longevity.