Noctua 40mm Nf-a4x20 Pwm 5000rpm Fan (NF-A4x20-PWM)

Manufacture # Noctua  | Model # A4x20-PWM

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 is a highly optimised, premium-quality quiet fan in size 40 x 20mm. The PWM version sports Noctua’s custom-designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise Adaptor as well as an OmniJoin Adaptor Set for easy connection to proprietary fan headers. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.

Features:

• Which allows for increased static pressure performance and makes
• The NF-A4x20-PWM ideal for demanding applications with high flow resistance
• The NF-A4x20-PWM impeller features suction side Flow Acceleration Channels
• Noctua’s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads
• Noctua’s Stepped Inlet Design adds turbulence to the influx in order to facilitate
• The tips of the fan blades ploughing through the boundary layer created 
• Integrated Anti-Vibration Pads made from extra-soft silicone minimise
• The NF-A4x20-PWM features the further optimised second generation of Noctua’s renowned
• The fan uses Noctua’s custom-designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology.

Overview:

• Screw hole spacings: 32 mm
• Connector: 4-Pin PWM
• Bearing: SSO2
• Blade Geometry: A-Series with Flow Acceleration Channels
• Frame Technology: AAO (Advanced Acoustic Optimisation)

Manufacturer Warranty: 06 Years Limited Warranty