The NF-B9's highly-optimised blade design achieves an exceptional level of airflow and static pressure that most other fans can only reach at much higher speeds. Bevelled blade tips, Vortex-Control Notches as well as Noctua's SCD drive system and premium-grade SSO-Bearing ensure outstanding quietness and long-term stability.

Bevelled Blade Tips
Due to advanced design measures like the bevelled blade tips, the NF-B9 is surprisingly quiet despite its outstanding airflow and pressure performance. button

Vortex-Control Notches
Psychoacoustic optimizations like the Vortex-Control Notches make the NF-B9's noise pattern more pleasant to the human ear. button

Smooth Commutation Drive
The new SC drive system reduces torque variations and thereby ensures improved running smoothness, particularly at lower speeds. button

Self-stabilizing oil-pressure bearing
Noctua's well proven SSO-Bearing technology guarantees supremely quiet operation and exceptional long-term stability.

Specifications:
Size: 92x92x25 mm
Bearing: SSO-Bearing
Blade Geometry: NF-B9 Blade Design with BBT & VCN
Rotational Speed (+/- 10%): 1600 RPM
Rotational Speed with L.N.A. (+/- 10%): 1300 RPM
Rotational Speed with U.L.N.A. (+/- 10%): 1000 RPM
Airflow: 64.3 m³/h
Airflow with L.N.A.: 52,6 m³/h
Airflow with U.L.N.A.: 41,1 m³/h
Acoustical Noise: 17,6 dB(A)
Acoustical Noise with L.N.A.: 13,1 dB(A)
Acoustical Noise with U.L.N.A.: 7,9 dB(A)
Static Pressure: 1,61 mm H2O
Static Pressure with L.N.A.: 1,09 mm H2O
Static Pressure with U.L.N.A.: 0,64 mm H2O
Input Power: 1,32 W
Input Current: 0,11 A
Voltage Range: 12 V
MTBF : > 150.000 h
Scope of Delivery:
- Ultra-Low-Noise Adaptor (U.L.N.A.)
- Low-Noise Adaptor (L.N.A.)
- 4 Vibration Compensators
- 3:4-Pin Adaptor
- 4 Fan Screws