Noctua 40mm Nf-a4x20 Flx 5000rpm Fan (NF-A4x20-FLX)

Manufacture # Noctua | Model # A4x20-FLX

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 FLX version provides 5000/4400/3700rpm speed settings via the supplied Low-Noise Adaptors and includes the 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:

• The NF-A4x20-FLX 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 Optimisation) frames feature integrated anti-vibration pads
• As well as Noctua’s proprietary Stepped Inlet Design and Inner Surface Microstructures
• 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
• Integrated Anti-Vibration Pads made from extra-soft silicone minimise
• The transmission of minute vibrations while maintaining full compatibility
• The NF-A4x20-FLX features the further optimised second generation of Noctua’s renowned

Overview:

• Screw hole spacings:32 mm
• Connector:3-Pin
• Bearing:SSO2
• Blade Geometry:A-Series with Flow Acceleration Channels
• Frame Technology:AAO (Advanced Acoustic Optimisation)

Manufacturer Warranty: 06 Years Limited Warranty