Noctua NF-A8 ULN, Ultra Quiet Silent Fan, 3-Pin (80mm, Brown)
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Robert M. Hicks
> 3 dayVery good value
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Cj
> 3 dayQuiet is an understatement. I have them on a server without the adapter that reduces noise further and with all the server fans off, I can not hear them. They are great.
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Robert Ruiz
> 3 dayAmazing fans so quiet & move quite a bit of air
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Damien Hagenes
> 3 dayI didnt understand how you could make a simple PC fan better. But boy this fan is amazingly quiet and just super high quality. We use this fan to run 24-7 and so far it seems fantastic - approx 1 month. I also like the 5 year warranty!! I mean who does that these days??
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Placeholder
09-06-2025It’s an ok fan. I was looking for a quiet and powerful fan. It’s quiet and average.
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Paulo
> 3 dayBought two of these to replace a competitor’s fans I use for cooling of an A/V cabinet. Those fans were, in turn, replacements for some older ones that had burnt out after fifteen years. Anyway . . .
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Ultima Gaina
> 3 dayAllow me to quote myself using my review for the device this fan was used in, because it speaks for itself:
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Red Stick Technologist
> 3 dayUnlike some other fans Ive tried, this unit remains quiet several months after installation. It is expensive, but worth it to me.
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Avi
Greater than one weekUsed on an Icom 7300
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Maximilain_1969
> 3 dayExtremely quiet! Comes complete with a good variety of adapters and mounting options.
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 ULN version provides super-slow 1400/1100rpm speed settings for ultra-low-noise applications and highly noise sensitive users who demand 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 |