Noctua NF-A9 PWM, Premium Quiet Fan, 4-Pin (92mm, Brown)
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Zhanrui Liang
> 3 dayVery quiet
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Erin O.
> 3 dayI know there are other good fan companies out there, but Ive become a snob about using Noctua for cooling my builds. Ive had their fans last me nearly 10 years, and while quality does tend to change over time, theirs seems to have stayed high. I fully recommend their products.
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Anthony2816
> 3 dayNice and quiet. Pity about the color, carefully designed to not match any other computer hardware.
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Patty Friddell
> 3 dayPut this in as second fan with Noctua CPU Cooler -- even under high load the fan is super quiet! Installation was very easy! Moves alot of air without noticeable fan noise!
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Lief
> 3 dayGreat fan but needed to check for noise, then return until received a quiet fan.
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LCCTX
> 3 dayThe hype is real. Theyre expensive as heck, but theyre the best fans Ive ever had in my case. I used a swarm of them to cool a 3080 graphics card and theyre SO much better than stock. Theyre quieter, and Im using 3 watts total to cool, versus the stock fans the graphics card had on that use 15 watts and make way more noise.
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personaobscura
> 3 dayQuiet smooth efficient
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emanon
> 3 dayVery quiet and was easy ti install.
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Fiorenzo Cattaneo
> 3 dayI replaced the stock fans in the two XEONs of a Supermicro motherboard. Very quiet, keeps CPU temp at 40C during memtest86_
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Jeffrey Rife
> 3 dayI bought three 92mm PWM fans to test, this Noctua NF-A9, the CoolerMaster SickleFlow 92, and the Arctic F9. The noise level on all at full speed is about the same (within 1dB from a foot away), with the Noctua the quietest, and this Arctic F9 the loudest. But, you will likely not hear any of them if they arent running at full speed.
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 |