- Anti-stall knobs
- AAO frame
- Stepped inlet design
- Inner surface microstructures
- Integrated anti-vibration pads
- SSO2 bearing
Featuring a further refined blade design with anti-stall knobs that works in tandem with the AAO (Advanced Acoustic Optimization) frame, the NF-S12A improves the airflow/noise efficiency of its renowned predecessor by up to 8%. The ULN version provides super-slow 800/600 rpm speed settings for ultra-low-noise applications and highly noise sensitive users who demand near-silent operation. Its superb running smoothness, SSO2 bearing and Noctua's trusted premium quality make it an elite choice for quiet case cooling.