Noctua NF-S12A FLX, Premium Quiet Fan, 3-Pin (120mm, Brown)
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Arthur
> 3 dayI purchased this as an add-on to my PC build.
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kevbev89
11-06-2025I wanted to replace my stock NZXT case fans and Corsair fans that I bought. My research ended up leading me to this Australian brand with the fugliest color scheme. But when you are in for serious performance, Noctua will definitely not disappoint.
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Wilmer David Alcántara Bustamante
> 3 dayIm loving it :D, exactly as the description says, very quiet
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SeaMike
> 3 dayBest fan made period
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ernest
> 3 dayarrived early and working just fine....thxs
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Joe Phillips
> 3 dayI have 3 of these fans in a Lian-Li PC-04B on low and they get the job done fantastically! (No Pun Intended). They are quiet and move quite a bit of air even with my fan controller on low.
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EDominguez
> 3 dayI am using four of these fans in a Corsair 540 case, and the fans run completely silent! The mounting can be a little bit difficult at times, but the overall a great fan design. Airflow is excellent, oh and I didnt notice any issues with the high pitched noise other reviews mention.
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GeorgeD.
> 3 dayGreat fan
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William
> 3 dayThe ugly duckling works is very quiet magic
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b.b.
> 3 dayQuiet, efficient, comes with a plethora of adapter cables, etc. Packaging makes you think youre opening a Rolex. Awesome fans...
The NF-S12A marks the third generation of Noctua’s signature S12 series quiet case fans, which have received more than 250 awards and recommendations from the international press. Featuring a further refined blade design with Anti-Stall Knobs that works in tandem with the new AAO (Advanced Acoustic Optimisation) frame, the NF-S12A improves the airflow/noise efficiency of its renowned predecessor by up to 8%. The FLX version provides 1200/900/700rpm speed settings via the supplied Low-Noise Adaptors in order to give you full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for quiet case cooling
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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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. |
SSO2 bearingThe NF-S12A 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. |
Inner Surface MicrostructuresWith 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. |
Scope of delivery
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Anti-Stall Knobs
The NF-S12A"s Anti-Stall Knobs reduce flow separation phenomena in medium to high impedance situations and thereby increase the fan"s stall margin. This means that the NF-S12A is even more versatile than its renowned predecessor and can achieve better performance on heatsinks and radiators.
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| NF-S12A PWM | NF-S12A FLX | NF-S12A ULN | NF-S12A PWM chromax.black.swap | |
| Connector | 4-pin PWM | 3-pin | 3-pin | 4-pin PWM |
| Voltage | 12V | 12V | 5V | 12V |
| RPM | Max: 1200 / Min: 300 | 1200 | 800 | Max: 1200 / Min: 300 |
| RPM with L.N.A. | 900 | 900 | 600 | - |
| RPM with U.L.N.A. | - | 700 | - | - |
| Acoustical Noise | 17,8 dB(A) | 17,8 dB(A) | 8,6 dB(A) | 17,8 dB(A) |
| Acoustical Noise with L.N.A. | 10,7 dB(A) | 10,7 dB(A) | 6,7 dB(A) | - |
| Acoustical Noise with U.L.N.A. | - | 7,4 dB(A) | - | - |
| Size (mm) | 120x120x25 | 120x120x25 | 120x120x25 | 120x120x25 |
| Colour | Brown & Beige | Brown & Beige | Brown & Beige | Black with swappable coloured anti-vibration pads |