Noctua NF-S12A FLX, Premium Quiet Fan, 3-Pin (120mm, Brown)
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N. A.
> 3 dayVery quiet, can barely hear it with my build right here on my desk.
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jenksdrummer
> 3 dayThese fans suck. Or blow. Either way, they do well moving air. Not too noisy about it either. I use the system board bios to control the speed. At 100%, they do make some noise, but all fans do. These seem to move more air per decibel (unofficial) than the Corsair fans I also have at the same size. Not sure if the RPM is apples to apples, but set at xxx%, this moves more air, and is quieter by comparison.
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ntex
11-06-2025I really like their fans. They package alot into the box, along with the fan you get screws and also 2 different rubber dampers that do not need screws to hold fan in place. I feel they cover pretty much everything you need.
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Buyer
Greater than one weekThis fan is much louder than I expected given its raving reviews and premium price. This 120mm fan is very audible even from 5 feet away and inside a sound dampening case. The 140mm fan on the other hand is totally silent.
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Rokji
Greater than one weekI installed two 120mm fans for exhaust on the top of my new custom pc. It works well and silent compare to other fans. Great fans.
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SeaMike
> 3 dayBest fan made period
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Jamitz
> 3 dayIve always wanted to get these fans for a long time. Ive heard so many good things and they push out a lot of mass air for the amount of sound. I only wish the color was different but Im glad I dont have to see the fans in the closed case.
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Odditorium
> 3 day......with these fans anyway. I replaced my 2 Cooler Master fans with these and the difference is like night and day. These fans are SILENT. I originally installed these with the low speed adapter and you couldnt even tell that the computer was on so I removed the adapters to get batter airflow and there was little difference is noise level. Ive contacted Noctuna three times regarding product info and they got back to me right away with the answers I was looking for. They also come with a 6 year warranty from Noctuna. I believe in this company. These are quality fans.
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Speedy
> 3 daySay cool with Noctua
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Brian L.
> 3 dayIm using this fan as a puller on my push pull H60 and i couldnt be happier with the performance and silent operation from this unit. And this fan pumps out a lot of air for 1200rpms. I can feel all the heat some my radiator being blasted out the rear grill of my case.
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 |