AAO Frame
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.
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Stepped Inlet Design
Noctua’s Stepped Inlet Design helps improve airflow efficiency and reduce tonal intake noise, resulting in smoother, quieter fan performance.
Metal bearing shell
Many of Noctua's models sport a CNC milled bearing shell made entirely from brass.
Inner Surface Microstructures
Miniature dents at the inside of the fan frame create a turbulent boundary layer when the fan blades pass by.
Focused Flow™ Frame
With 11 guide vanes, the Focused Flow™ frame focuses airflow for pressure-heavy tasks like heatsinks and radiators.