The NF-A20 is a highly optimized, premium quality quiet 200mm fan. Featuring an AAO (Advanced Acoustic Optimization) standard frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A20 brings the renowned quiet cooling performance of Noctua’s award-winning A-series to the increasingly popular 20cm form factor. The FLX version provides 800/550rpm speed settings via the supplied Low-Noise Adapter in order to provide full flexibility in fine tuning the fan for maximum ventilation performance or near silent operation. It's superb running smoothness, reference-class SSO2 bearing and Noctua's trusted premium quality make the NF-A20 an elite choice for the highest demands.
Award-winning Noctua quality in 20cm size
While more and more PC cases support 20cm intake, side-panel or exhaust fans, many of the bundled stock units and available aftermarket options are of questionable quality. By contrast, the NF-A20 is a true premium grade solution worthy of Noctua’s award-winning A-series.
154mm, 110x180mm and 170mm hole spacing
In order to ensure broad compatibility with today’s PC cases, the NF-A20 features three sets of mounting holes: While the 154x154mm and 110x180mm spacing allow it to replace most 200mm fans, the 170x170mm spacing is used by many 230 and 250mm fans, which can thus also be replaced by the NF-A20.*
Flow Acceleration Channels
The NF-A20 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
Noctua's AAO (Advanced Acoustic Optimization) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Stepped Inlet Design
Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.
Inner Surface Microstructures
With the tips of the fan blades plowing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
Integrated anti-vibration pads
Integrated anti-vibration pads made from extra-soft silicone minimize the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.
Smooth Commutation Drive 2
The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the fan remarkably quiet even at very close distances.
Low-Noise adapter for full flexibility
The NF-A20 FLX (Flexibility) is supplied with a Low-Noise Adapter (L.N.A.) that reduces the maximum fan speed from 800 to 550rpm so that it can be fine-tuned for superior airflow or maximum quietness.
Extensive cabling options
The fan's short 20cm primary cable minimizes cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second fan to the same PWM fan header for automatic control.
The NF-A20 features the further optimized second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilization, precision and durability.
6-year manufacturer’s warranty
Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A20 features an MTTF of more than 150,000 hours rating and comes with a full 6-year manufacturer’s warranty.
*As there is no fixed industry standard for the size or hole spacing of 200mm, 220mm, 230mm or 250mm fans, please see our case compatibility list and carefully check both the hole setup of your chassis and the available space (the NF-A20 is 30mm thick whereas some other 200mm fans are only 20mm!) in order to verify that the NF-A20 is compatible with your chassis. In case of doubt, please contact your chassis manufacturer.
200 x 200 x 30mm
Mounting hole spacing
154 x 154, 110 x 110, 170 x 170mm
Connector and pin configuration
20cm + 30cm NA-EC1 extension cable
A-Series with Flow Acceleration channels
AAO (Advcanced Acoustic Optimization
Rotational speed (+/- 10%)
Rotational speed with L.N.A (+/- 10%)
Airflow with L.N.A.
Acoustical noise with L.N.A.
1.08 mm H₂O
Static pressure with L.N.A.
0.51 mm H₂O
Max. input power
Max. input current
Voltage PWM signal
Scope of delivery
Low-noise adapter (L.N.A.)
3:4-pin adaptor cable
30cm extension cable
NA-AV3 anti-vibration mounts
NA-AV4 anti-vibration mounts
If you are a reseller or a system builder we offer special pricing on bulk orders of this product. Contact us at firstname.lastname@example.org or call Toll Free (877) 205-2020 for more information.