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.
The Noctua NF-B9 PWM Quiet Computer Fan.
The Noctua NF-B9 PWM has unique Bevelled Blade Tips
Design.
The Noctua NF-B9 PWM quiet PC 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 m³ |
| Airflow with L.N.A. |
52.6m³ |
| 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. |
|---|
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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. |
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Pressure-optimized Nine-Blade Design
Reducing critical rotor stator interaction, the NF-B9’s Bevelled Blade Tips permit to combine a higher blade surface area with quieter operation and thus form a cornerstone of the fan’s outstanding efficiency.
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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.
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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.
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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.
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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. |
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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. |
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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. |
More Information
More information can be found at Noctua NF-B9 PWM FAQ's.
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