NF-B9 REDUX PWM 12V 1600RPM 92mm Quiet Case Fan $ 12.87 30 in stock	Add to Basket
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Noctua NF-B9 REDUX PWM 12V 1600RPM 92mm Quiet Case Fan

The redux product line reissues some of Noctua’s most popular, award-winning models by presenting them in streamlined packages that have been reduced to the essential core: premium quality quiet cooling solutions.

Features

Proven NF-B9 PWM Design
Streamlined redux edition
Vortex-Control Notches
Bevelled Blade Tips
Six year manufacturer’s warranty

The classic NF-B9 is a long-standing favourite among enthusiast users around the world and has helped to found Noctua’s reputation as a top-tier manufacturer of premium quality quiet cooling components. The new Redux edition reissues this award-winning model in a streamlined, accessibly priced package that has been reduced to the essential core: the NF-B9 premium fan. Its industry grade SSO bearing, over 150.000 hours MTBF rating and full 6 years manufacturer’s warranty make the NF-B9 redux a proven premium choice that provides trusted Noctua quality at an attractive price point. The 1600rpm PWM version features Noctua’s proprietary NE-FD1 PWM IC for automatic speed control, which strikes a perfect balance between high cooling capacity and low noise operation in each given situation.

Proven NF-B9 design

Tens of thousands of quiet cooling enthusiasts around the globe swear by Noctua’s classic NF-B9. Thanks to its impressive quietness, excellent performance and impeccable quality, the NF-B9 has become an established reference for quiet 92mm fans.

Streamlined redux edition

The redux product line reissues some of Noctua’s most popular, award-winning models by presenting them in streamlined, accessibly priced packages. All Redux edition products are industry proven, time-tested models that have helped to found Noctua’s reputation as a first-tier supplier of premium grade low noise cooling equipment.

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 fan sound more pleasant to the human ear.

Bevelled Blade Tips

Reducing critical rotor stator interaction, Bevelled Blade Tips permit to combine extended leading edges and a higher blade surface area with quieter operation and thus form a cornerstone of the fan’s outstanding efficiency.

Custom designed PWM IC with SCD

Supporting fully automatic speed control via PWM, the fan uses Noctua’s 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.

SSO-Bearing

Combining the proven concept of hydrodynamic bearings with an additional magnet that supports the self-stabilisation of the rotor axis, Noctua’s time-tested SSO-Bearing technology has become synonymous with supremely quiet operation and exceptional long-term stability.

Optional accessories

Users can choose from Noctua’s wide range of optional accessories such as anti-vibration mounts, Low-Noise-Adaptors, y-cables, 3:4 pin adaptors or extension cables to upgrade redux edition fans according to their individual needs. Click here for available options.

Six years manufacturer’s warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the Redux edition models feature an MTBF rating of more than 150.000 hours and come with a full six year manufacturer’s warranty.

Specifications	NF-B9 REDUX PWM
Size	92x92x25 mm
Connector	4-pin PWM
Bearing	SSO
Rotational Speed (±10%)	1600 RPM
Min. Rotational Speed (PWM, +/-20%)	350 RPM
Airflow	37.8 CFM
Acoustical Noise	17.6 dB(A)
Static Pressure	1.61 mm H2O
Max. Input Power	0.96 W
Max. Input Current	0.08 A
Voltage	12 V
MTBF	150.000 h
Accessories	Four Fan Screws
Warranty	72 months
EAN barcode	4716123315315

Specifications	NF-B9 REDUX PWM
Size	92x92x25 mm
Connector	4-pin PWM
Bearing	SSO
Rotational Speed (±10%)	1600 RPM
Min. Rotational Speed (PWM, +/-20%)	350 RPM
Airflow	37.8 CFM
Acoustical Noise	17.6 dB(A)
Static Pressure	1.61 mm H2O
Max. Input Power	0.96 W
Max. Input Current	0.08 A
Voltage	12 V
MTBF	150.000 h
Accessories	Four Fan Screws
Warranty	72 months
EAN barcode	4716123315315

Product Resources

Noctua website

FAQ

How do I measure fan size?
The size of fan you need will generally be determined by the size of the fan fitting position in your PC case. The sizes of all the fans on our website are shown as measured along any one of the fan’s four sides, NOT the distance between the fan’s screw holes! Our most popular fan size is 120mm, followed by 80mm. This isn’t really dictated by customer preference, but more by recent designs of PC cases.

As for the thickness (depth) of the fan, generally 25mm (1 inch) is by far the most common depth, although smaller fans can have shallower depths such as 15mm or even 10mm. All our fans are 25mm thick unless otherwise stated. If you have any questions about which fan you should order, please don’t hesitate to get in touch.

If you know the distance between the fan mounting screw holes but don’t know what fan size to order, please see the following table. Note that the mounting hole measurements shown below are taken horizontally or vertically between the holes and not diagonally.

Screw hole spacings and fan sizes

Space Between Screw Holes Fan Size

32mm 40mm

40mm 50mm

50mm 60mm

60mm 70mm

72mm 80mm

83mm 92mm

105mm 120mm
I received a small cable (resistor) with my fan; what is it for?
The resistor cable (also called Ultra Low Noise or ULN cable) is designed to allow the fan to run slightly slower for even quieter operation. The benefit in lower running noise is significant. Although the airflow will be reduced slightly, this usually has minimal effect on PC temperature. We would generally recommend using the ULN resistor cable for best results in almost all circumstances.
How can I tell which way the air blows through the fan?
Hold the fan so that the round fan sticker is facing you. You are looking at the rear of the fan. When you plug the fan in, the air will be blowing towards you. If you want a fan to act as an air intake, then the fan sticker will be facing the inside of the case. Some fans also have two small arrows moulded into their plastic housing - one arrow shows the direction of airflow, and the other (at 90°) shows the direction of blade rotation.
Is it possible to use a 4-pin PWM fan or CPU cooler with a motherboard which has only 3-pin fan headers on it?
Electrically, there is no problem doing this - the fourth pin on the fan cable is used purely for PWM control and is not needed in order for the fan to run. So you can plug the 4-pin fan connector onto the 3-pin motherboard fan header, leaving the fourth pin not connected to anything. The fan will potentially run at full speed, so if you would like to reduce the speed of the fan you will need to adjust the fan speed setting in your BIOS or use fan control software such as SpeedFan in Windows.

The only other problem to consider is that occasionally, components immediately adjacent to the motherboard fan header can get in the way of the larger 4-pin fan connector, physically preventing connection. This problem also occurs if you try to use an in-line fan speed controller such as the one made by Gelid.

Another avenue to explore is the possibility of using a bay-mounted fan controller. Several models are available now which provide 4-pin fan headers, so this is an easy way to use 4-pin PWM fans in a PC system which has only 3-pin fan headers on its motherboards. When using this method, you may find it necessary to disable any fan warning settings in your motherboard BIOS, since the motherboard may incorrectly believe that its CPU fan has failed when the fan is connected to a fan controller rather than directly to the motherboard itself.