Beveled blade tips reduce critical rotor/ stator interaction, combine a higher blade surface area with quieter operation and form a cornerstone of the fan's efficiency.
Vortex-control notches split up trailing edge vortices and spread the fan's noise emission over a wider range of frequencies.
Supporting fully automatic speed control, the NF-B9 uses Noctua's novel, custom-designed NE-FD1 IC that integrates Smooth Commutation Drive (SCD) technology.
The NF-B9 PWM is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 1600 to 1300rpm. The L.N.A can run the fan at a fixed speed of 1300rpm or cap the maximum speed when using automatic control.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6 inch
Height : 1.5 inch
Length : 7.2 inch

Item Weight: 6.4 ounce (View shipping rates and policies)
Shipping Weight: 8.8 ounce (View shipping rates and policies)

ASIN : B006ISKYPE