Noctua NF-A8 FLX, Premium Quiet Fan, 3-Pin (80mm, Brown)
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Syble Kuphal
> 3 dayWorks like it should, would be cool if available in a few colors. Built a self cooling amp rack that these were a part of. Solid in my opinion.
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Ddave
Greater than one weekThis is without a doubt, the quietest fan I have EVER used! Ive been buying fans for 20 years and this is the BEST. I had a fan go out in my stereo cabinet. Its always on, and its in my living room. I hooked this one up and I had to double check that it was running it was so quiet. Not only that, I opened the cabinet to shut the stereo off and the air in the cabinet was COLD! This thing moves a lot of air...
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Moe Howard
03-06-2025Lots of engineering, documentation went into this fan and the support is just as good.
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Mr. Glen Wehner PhD
> 3 dayAfter installing Noctua fans in my system is dead silent. The Seagate 2tb HDD is nearly as loud as these fans. Dead silent! I would recommend to anyone whos interested just for the quietness factor as I was.
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Jeanne Lorenz
> 3 dayShhh! Good quiet fan. The amount of packaging is totally disgusting!
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R. EARLS
> 3 dayMy Synology DS1515+ sits in my office about 8 from my desk. I used these Noctua NF-A8 FLX fans to replace the cheap fans that came with it. The made-in-china fans that came with my Synology werent necessarily loud, but they rattled a bit and didnt sound like they were quality fans. Swapping these fans was incredibly simple (thanks to Synology design). The rubber edges of the Noctua fan ensured a snug, vibration-free fit. The power adapter was exactly the same and didnt require any conversion cables. Even set to the highest speed, the fans are whisper quiet with no rattles. Using my hand, it feels like theyre pushing more air than the original fans. I dont see any major difference in temperature of my Synology, so I cant tell if its moving more air. But Im very happy with the results. Id highly recommend these fans for anyone looking for reliable, quiet operation.
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VansEI
> 3 dayVery good quality (and quiet) fans!
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Misha
> 3 dayNice and quiet. I had a loud subwoofer amp with an 80mm fan and I fixed it with this fan. It provides enough CFM but is super quiet,
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BigBlock
> 3 dayits a Noctua so those that know thats enough said! Easy to install and blows up a storm and accommodates variable speed software
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Michael A. Mast
> 3 dayGets the job done, moves a lot of air and is quite.
The NF-A8 is a highly optimised, premium quality quiet 80mm fan. Featuring Noctua’s AAO (Advanced Acoustic Optimisation) frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A8 further improves the renowned quiet cooling performance of the award-winning NF-R8. The FLX version provides 2000/1650/1200rpm speed settings via the supplied Low-Noise Adaptors in order to provide full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. 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-A8 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-A8 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-A8 PWM | NF-A8 FLX | NF-A8 ULN | NF-A8 5V PWM | NF-A8 5V | NF-A8 PWM chromax.black.swap | |
| Connector | 4-pin PWM | 3-pin | 3-pin | 4-pin PWM | 3-pin | 4-pin PWM |
| Voltage | 12V | 12V | 12V | 5V | 5V | 12V |
| RPM | Max: 2200 / Min: 450 | 2000 | 1400 | Max: 2200 / Min: 450 | 2200 | Max: 2200 / Min: 450 |
| RPM with L.N.A. | 1750 | 1650 | 1100 | - | - | - |
| RPM with U.L.N.A. | - | 1200 | - | - | - | - |
| Acoustical Noise | 17,7 dB(A) | 16,1 dB(A) | 10,4 dB(A) | 17,7 dB(A) | 17,7 dB(A) | 17,7 dB(A) |
| Acoustical Noise with L.N.A. | 13,8 dB(A) | 12,9 dB(A) | 6,5 dB(A) | - | - | - |
| Acoustical Noise with U.L.N.A. | - | 7,9 dB(A) | - | - | - | - |
| Size | 80x80x25 mm | 80x80x25 mm | 80x80x25 mm | 80x80x25 mm | 80x80x25 mm | 80x80x25 mm |
| Colour | Brown & Beige | Brown & Beige | Brown & Beige | Brown & Beige | Brown & Beige | Black with swappable coloured anti-vibration pads |