NOCTUA NF-A9 FLX
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Succeeding the awardwinning NFB9 Noctua's NFB9 fan has become a defaultchoice among PC enthusiasts looking for a premium quality quiet 92mm fan. Thanks to its thoroughgoing aerodynamic optimisations the NFA9 provides higher static pressure and an even better airflow/noise ratio than its much acclaimed predecessor. Flow Acceleration Channels The NFA9 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. AAO Frame Noctua's AAO Advanced Acoustic Optimisation frames feature integrated antivibration 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. Innner 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 NFA9 remarkably quiet even at very close distance. SSO2 Bearing The NFA9 features the further optimised second generation of Noctua's renowned timetested SSO bearing. With SSO2 the rear magnet is placed closer to the axis to provide even better stabilisation precision and durability. 3 speed settings for full flexibility Providing 1600 1250 and 1050 rpm speed settings via the supplied LowNoise and UltraLow Noise Adaptors the NFA9 FLX Flexibility can be finetuned for superior airflow or maximum quietness. 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 and the supplied 3:4 pin adaptor allows to connect the fan directly to the power supply. 6 years manufacturer's warranty Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans the NFA9 FLX features an MTBF rating of more than 150.000 hours and comes with a full 6 years manufacturer's warranty