Noctua NF-A9 PWM, Premium Quiet Fan, 4-Pin (92mm, Brown)
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MB
> 3 dayWow, this is so quiet that when I installed it to replace my foxconn 92mm exhaust fan (that was too loud and whiney) at first I thought it wasnt working. I can only hear it a tiny bit in the dead of night. It even lowered my cpu temp by 1 degree at heavy load. Im also using a Noctua NF-A8 PWM case fan on my Ryzen 3600 cpu so my HP Pavillion PC is now nearly as silent as my laptop (however my cpu temps went up a few degrees under heavy load with the lower powered Noctua 80mm fan so no overclocking with my current rig). Noctua fans are definitely worth the money for people who need a quiet computer.
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Tim Everett
> 3 dayVery nice PWM controlled fan. Very high quality and really a good value for the money.
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Cain
> 3 daySo Ive been hearing all this chatter about how good these fans are and how amazing they are. I got my first Noctura fan today, and all I can say is ... Very well built, nice packaging and this fan is crazy quiet. I had to put my ear close to it to be certain it was running!
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Robert Argumaniz
> 3 dayVery quiet good item
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Jose Ortiz
> 3 dayI used this product to replace two 92mm fans on some workstation-class R17 LGA2011 air coolers. The ball bearings on those fans seem barbaric now that my new noctua fans have zero bearing noise, and a gentle woosh of air. And when one of my five currently-employed noctua fans wears out over the next six years, I know noctua will be there with a warranty service.
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David R.
Greater than one weekNoctua fans have a distinct reputation within the DIY community... and for good reason! 92mm fans are not always known as being the quietest, but this one is definitely an exception. I decided to replace the 14mm thin fan that comes with the
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Dennis
> 3 dayVery pleased
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Connor
> 3 dayAs is mostly the case with Noctua they designed a good fan here. Does exactly what I need for its size and is very quiet at the same time. Far quieter at full speed than many others. Not for the faint of wallet though.
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Joseph Earl Johnson Jr.
> 3 dayNo wire brackets to mount secondary fan to heatsink radiator... so the fan is USELESS!! $
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LVWasHere
> 3 dayAnother quality fan from Noctua that is whisper quiet... two thumbs up!
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-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.
AAO frame
Noctua"s AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua"s proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan"s performance/noise efficiency.
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Flow Acceleration ChannelsThe NF-A9 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise. |
SSO2 bearingThe NF-A9 features the further optimised second generation of Noctua"s renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability. |
Integrated anti-vibration padsIntegrated anti-vibration pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems. |
Scope of delivery
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Inner Surface Microstructures
With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
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| NF-A9 PWM | NF-A9 FLX | NF-A9 5V PWM | NF-A9 5V | NF-A9 PWM chromax.black.swap | |
| Connector | 4-pin PWM | 3-pin | 4-pin PWM | 3-pin | 4-pin PWM |
| Voltage | 12V | 12V | 5V | 5V | 12V |
| RPM | Max: 2000 / Min: 400 | 1600 | Max: 2000 / Min: 400 | 2000 | Max: 2000 / Min: 400 |
| RPM with L.N.A. | 1550 | 1250 | - | - | - |
| RPM with U.L.N.A. | - | 1050 | - | - | - |
| Acoustical Noise | 22,8 dB(A) | 17,1 dB(A) | 22,8 dB(A) | 22,8 dB(A) | 22,8 dB(A) |
| Acoustical Noise with L.N.A. | 16,3 dB(A) | 11,6 dB(A) | - | - | - |
| Acoustical Noise with U.L.N.A. | - | 8,4 dB(A) | - | - | - |
| Size | 92x92x25 mm | 92x92x25 mm | 92x92x25 mm | 92x92x25 mm | 92x92x25 mm |
| Colour | Brown & Beige | Brown & Beige | Brown & Beige | Brown & Beige | Black with swappable coloured anti-vibration pads |