Noctua NF-A4X10 FLX 3pin 4500RPM Case Fan

Flow Acceleration Channels The NF-A4x10 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.   Reduced motor hub size Thanks to its streamlined, compact motor design, the NF-A4x10's motor hub is smaller than with conventional 4cm fans. This allows for more blade surface area and thus contributes to the NF-A4x10's superior airflow and pressure performance.   AAO frame 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, 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 ploughing 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.   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 NF-A4x10 remarkably quiet even at very close distances.   SSO2 Bearing The NF-A4x10 features the further optimised 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 stabilisation, precision and durability.   Low-Noise Adaptor for full flexibility The NF-A4x10 FLX (Flexibility) is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 4500 to 3700rpm so that it can be fine-tuned for superior airflow or maximum quietness.   3 to 2-pin Adaptor and Polarity Protection The NF-A4x10 comes with an adaptor from 3-pin Molex to the 2-pin connectors used on many graphics cards or network and storage devices. An integrated diode provides polarity protection on 2-pin connections.   OmniJoin™ Adaptor Set Many devices featuring 40mm fans use proprietary fan headers, so the NF-A4x10 comes with Noctua's OmniJoin™ adaptor set. Just cut the original fan's cable, fix it to the adaptor using the supplied cable connectors and you can plug the NF-A4x10 to proprietary fan headers!   Extensive cabling options The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved.   Technical Details   Brand : Noctua Model : NF-A4X10 FLX   Specification   Size : 40x40x10 mm Mounting hole spacing : 32x32 mm Connector & pin-configuration : 3-pin Cable length : 20cm + 30cm NA-EC1 extension cable Bearing : SSO2 Blade geometry : A-Series with Flow Acceleration Channels Frame technology : AAO (Advanced Acoustic Optimisation) Rotational speed (+/- 10%) : 4500 RPM Rotational speed with L.N.A. (+/- 10%) : 3700 RPM Airflow : 8,2 m³/h Airflow with L.N.A. : 6,6 m³/h Acoustical noise : 17,9 dB(A) Acoustical noise with L.N.A. : 12,9 dB(A) Static pressure : 1,78 mm H₂O Static pressure with L.N.A. : 1,21 mm H₂O Max. input power : 0,6 W Max. input current :0,05 A Operating voltage : 12 V MTTF : > 150.000 h