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.

Diagram detailing Noctua AAO Advanced Acoustic Optimisation frame, highlighting integrated anti-vibration pads, stepped inlet design, and inner surface microstructures.

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Focused Flow™ Frame

With 11 guide vanes, the Focused Flow™ frame focuses airflow for pressure-heavy tasks like heatsinks and radiators.

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.

Stepped Inlet Design

Noctua’s Stepped Inlet Design helps improve airflow efficiency and reduce tonal intake noise, resulting in smoother, quieter fan performance.