Noctua NF-A9 PWM, Premium Quiet Fan, 4-Pin (92mm, Brown)
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James Cornwell
> 3 dayDropped it into my Hp 8300 Slim Factor as a replacement for the cpu fan. The fan itself is the right size, though its not a perfect fit. Quieter then previous fan, no issues here.
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JefferyS
> 3 dayWorks great, bought it as an add-on fan to my Noctua heat sink.
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FASTER220
> 3 dayBought these thinking high quality well or over priced fans must be good. I bought these to power by usb. After finding out they have barely have any flow I use a Silver stone 1500 watt psu to see if it was lack of power making them so lame. No change they barely make any flow. I spent over $30 for these little no flow useless fans. Guess what they are silent . They make no noise and barely push any air. Money wasted. I bought a $4 usb no name brand fan to replace the useless fans and they are same size. The only thing different is they flow so good they could probley could puss these fans of the table with air flow. I cant imagine who would depend on these to cool a cpu. No time to send back so Im beat out of $30 plus. Dont believe the hype. I would rather buy fans a quarter of the price that offer better performance.I use my computers 24/7 Over the years I think one went bad. out of 30.. I really feel bad for the guy that uses this to cool a cpu. Now these useless fans are somewhere in a box forgotten about.They just remind me of being robbed.
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bjveee
> 3 dayTop quality 92mm fan.
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emanon
Greater than one weekVery quiet and was easy ti install.
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AtHome Girl
> 3 dayThe fan works fine. It replaced an existing fan. The only issue is when the computer is started it is looking for the old fan and we have to tell it theres a different fan before the computer will start. It is just inconvenient.
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Wilford Sipes
> 3 daygood
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TonyP
Greater than one weekI like Noctuas fans, but I knocked off a star because they are so high-priced.
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Mark
Greater than one weekIf you are thinking about buying this, just go ahead... I am very happy with the noise level
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Prentice B. Bryant
Greater than one weekCombined with a CRYORIG M9i cooler that replaced the old and dusty stock Intel cooler, this fan serves as an exhaust fan on the rear chassis. At max load with the most intensive transcoding x265 video tasks in Handbrake, the max rpm never exceeds 1300, and at idle and light web browsing, it hovers around 800 rpm. You simply do not hear it or feel any vibrations when its working when touching the case, but you can definitely feel the air coming out the rear exhaust of the case, keeping things nice and cool at 34-40 C and never above 70 C at max load. The difference it has made to the old Asus M11AD is like getting a new computer which operates so much more efficiently, especially with the added SSD boot drive from SK. Next Ill likely upgrade the PSU and Graphics Card in addition to another 92 mm fan mounted on the front of the case to keep things cool.
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 |