The NF-A20 is a highly optimized, quiet 200 mm fan of premium quality. Thanks to its AAO (Advanced Acoustic Optimization) frame system and advanced aerodynamic design features such as Flow Acceleration Channels, the NF-A20 delivers the outstanding silent cooling performance that Noctua's award-winning A-series is known for, now available in a 20 cm format for the first time. The PWM version is equipped with Noctua's specially designed NE-FD1 IC for fully automatic speed control via 4-pin connectors, ensuring the best balance between quiet operation and airflow performance in any situation. Its superb quietness, the SSO2 reference-class bearing, and Noctua's proven premium quality make the NF-A20 a top solution for the highest demands.