Noctua NF-S12A FLX, Premium Quiet Fan, 3-Pin (120mm, Brown)
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R Cantwell
> 3 dayAs advertised
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JasonB.
Greater than one weekTHIS FAN IS SO QUIET, IM YELLING TO RESTORE THE BALANCE.
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William Danley
> 3 dayWorks as advertised, quiet, easy install, would buy more when needed.
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Tran Pham
Greater than one weekI hesitated a little when I purchased this, because of the price and its color. However, as soon as I plug it in, I was very very happy with the performance. Probably the quietest fan Ive ever used and yet still has great airflow. Everything about the fan is great(from the product itself, the accessories that came with it, to the design of the box), I felt very satisfied. Would totally recommended to anyone that dont care a lot about it color scheme, the fan is suppose to be inside the case anyway.
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Dan Tech Man
> 3 dayBEST FANS EVER!!!
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Stanton Nichols
> 3 dayI replaced the fan on my Cooler Master Hyper 212 EVO CPU Cooler with this fan; slightly better temperatures, much quieter performance!
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royh
> 3 dayI have an NZXT H500 with stock cooling. The top case fan bearing started to give up the ghost and began to sound like an armored division rolling through my room.
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Sydney Kennedy
Greater than one weekMy case was generating more heat than my CPU heatsink was able to deal with, so I installed this as a secondary fan. Quiet, easy to install, and has kept my temps nice and low
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Jonfu
> 3 daySupa-quiet.
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carter johnson
05-06-2025Pros: All other fans are junk. These are so quiet you will need to look at them to ensure your self they are running.
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 |