Noctua NF-A9 PWM 12V 2000RPM 92mm Premium Quality Fan
Noctua’s new 92mm fans have been updated to feature their innovative technology. The NF-A9 PWM offers automatic fan speed control when connected to a PWM fan header on the motherboard.
Features
- Sound-optimised blade geometry and profile (Flow Acceleration Channels)
- Self-stabilising oil-pressure bearing (SSO2 Bearing)
- <17 dB(A) minimum noise with supplied L.N.A.
- 46.4 CFM maximum airflow
- Includes 4 Vibration-Compensators
- Six years warranty
The NF-A9 is a highly optimised, premium quality quiet 92mm fan. Featuring Noctua’s AAO (Advanced Acoustic Optimisation) frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A9 further improves the renowned quiet cooling performance of the award-winning NF-B9. The PWM version sports Noctua’s custom designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise-Resistor Adaptor to reduce the maximum speed during PWM control from 2000 to 1550rpm. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.
| Specifications | NF-A9 PWM |
|---|---|
| Size | 92x92x25 mm |
| Fan Connector | 4-pin PWM |
| Bearing | SSO2-Bearing |
| Blade Geometry | A-Series with Flow Acceleration Channels |
| Rotational Speed (±10%) | 2000 RPM |
| Rotational Speed with L.N.A. (±10%) | 1550 RPM |
| Min. Rotational Speed (PWM, ±20%) | 450 RPM |
| Airflow | 46.4 CFM |
| Airflow with L.N.A. | 36.8 CFM |
| Acoustical Noise | 22.8 dB(A) |
| Acoustical Noise with L.N.A. | 16.3 dB(A) |
| Static Pressure | 2.28 mm H2O |
| Static Pressure with L.N.A. | 1.53 mm H2O |
| Input Power | 1.2 W |
| Input Current | 0.1 A |
| Voltage | 12 V |
| Accessories | Low-Noise Adaptor (L.N.A.), 4-Pin Y-Cable, 30cm Extension Cable, |
| Warranty | 24 months |
| EAN barcode | 4716123315513 |
| Specifications | NF-A9 PWM |
|---|---|
| Size | 92x92x25 mm |
| Fan Connector | 4-pin PWM |
| Bearing | SSO2-Bearing |
| Blade Geometry | A-Series with Flow Acceleration Channels |
| Rotational Speed (±10%) | 2000 RPM |
| Rotational Speed with L.N.A. (±10%) | 1550 RPM |
| Min. Rotational Speed (PWM, ±20%) | 450 RPM |
| Airflow | 46.4 CFM |
| Airflow with L.N.A. | 36.8 CFM |
| Acoustical Noise | 22.8 dB(A) |
| Acoustical Noise with L.N.A. | 16.3 dB(A) |
| Static Pressure | 2.28 mm H2O |
| Static Pressure with L.N.A. | 1.53 mm H2O |
| Input Power | 1.2 W |
| Input Current | 0.1 A |
| Voltage | 12 V |
| Accessories | Low-Noise Adaptor (L.N.A.), 4-Pin Y-Cable, 30cm Extension Cable, |
| Warranty | 24 months |
| EAN barcode | 4716123315513 |
Customer Reviews
Quiet and efficient
Have this in a small PC build (Streacom F7CWS case) and together with a Noctua CPU cooler, it is doing a great job of keeping everything in the box cool including an i7 8700 with very little noise.
Alienware Aurora Much Quieter
Replaced all 5 fans (chipset, RAM, HDD, PCI & PSU) in my 2010 Alienware Aurora R1 with Noctua units. Well worth the money. Machine is practically silent now and internal temps are down by at least 10 degrees C.
Product Resources
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.
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