Noctua NF-B9 PWM Quiet Computer Cooling Fan 92mm

The classic NF-B9 92mm fan helped to found Noctua's reputation as a top-tier manufacturer of premium quality quiet cooling components and still impresses users with its exquisite quietness and superb performance. The new PWM version features Noctua's novel, custom designed PWM IC for fully automatic control and ultra-low power consumption. Equipped with Noctua's signature SSO bearing and topped off with a 6 years manufacturer's warranty, the NF-B9 PWM is a proven premium choice for the highest demands.

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Noctua NF-B9 PWM

Noctua NF-B9 PWM Quiet 92mm Cooling Fan.
Noctua NF-B9 PWM Quiet 92mm Cooling Fan with unique Bevelled Blade Tips Design.
Noctua NF-B9 PWM Quiet 92mm Cooling Fan Components and Retail Packaging.

Noctua NF-B9 PWM Technical Specification

Noctua NF-B9 PWM Product Specification
Size	92x92x25 mm
Connector	4-pin PWM
Bearing	SSO
Blade Geometry	NF-B9 Blade Design
Rotational Speed (+/- 10%)	1600 RPM
Rotational Speed with L.N.A. (+/- 10%)	1300 RPM
Min. Rotational Speed (PWM)(+/- 10%)	300 RPM
Airflow	64.3 m³h - 37.85 cfm
Airflow with L.N.A.	52.6 m³h - 30.96 cfm
Acoustical Noise	17.6 dB(A)
Acoustical Noise with L.N.A.	13.1 dB(A)
Static Pressure	1.61 mm H₂O
Static Pressure with L.N.A.	1.09 mm H₂O
Max. Input Power	0.96 W
Input Current	0.08 A
Voltage Range	12V
MTBF	> 150,000 h
Scope of Delivery	Low-Noise Adapter (L.N.A.) 4-Pin y_Cable 30cm Extension Cable 4 Vibration Compensators 4 Fan Screws
Warranty	6 years

Noctua NF-B9 PWM Features

Noctua NF-B9 PWM Features
	Proven NF-B9 Design Tens of thousands of quiet cooling enthusiasts swear by Noctua’s classic NF-B9. Its impressive quietness, excellent performance and impeccable, time-tested quality made the B9 a default choice for 92mm quiet cooling.
	Pressure-optimized Nine-Blade Design Reducing critical rotor stator interaction, the NF-B9’s Beveled Blade Tips permit to combine a higher blade surface area with quieter operation and thus form a cornerstone of the fan’s outstanding efficiency.
	Vortex Control Notches Noctua’s signature Vortex-Control Notches split up trailing edge vortices and thus spread the fan’s noise emission over a wider range of frequencies. This measure makes the NF-B9 PWM sound more pleasant to the human ear.
	SSO Bearing Combining the proven concept of hydrodynamic bearing with an additional magnet that supports the self-stabilization of the rotor axis, Noctua’s time-tested SSO-Bearing technology has become synonymous with supremely quiet operation and exceptional long-term stability.
	Custom designed PWM IC with SCD Supporting fully automatic PWM speed control, the NF-B9 uses Noctua’s novel, custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at lower speeds.
	Low-Noise Adapter The NF-B9 is supplied with a Low-Noise Adapter (L.N.A.) that reduces the maximum fan speed from 1600 to 1300rpm. The L.N.A can be used either to run the fan at a fixed speed of 1300rpm or to cap the maximum speed when using automatic PWM control.
	Extensive Cabling Options The fan’s short 20cm primary cable minimizes cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows to connect a second NF-P12 fan to the same PWM fan header for automatic control.
	6 years Manufacturer's Warranty Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-B9 features an MTBF rating of more than 150.000 hours and comes with a full 6 years manufacturer's warranty.