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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.

  button  Anti-Stall Knobs 
button  AAO Frame
button  Stepped Inlet Design 
button  Inner Surface Microstructures 
button  SSO2 Bearing
button  Metal Bearing Shell 
button  NE-FD1 PWM IC 
button  Which Noctua 120mm fan should I choose?
Details
Award-winning S12 design

Award-winning S12 design

The NF-S12A features the third evolution of Noctua's classic Straight Blade Design that has earned its S12 series countless recommendations from hardware journalists and enthusiasts around the world. Further optimised for even better airflow/noise efficiency, it makes the NF-S12A an ideal quiet case fan.
Anti-Stall Knobs

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.
AAO Frame

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.
Stepped Inlet Design

Stepped Inlet Design

Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.
Inner Surface Microstructures

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.
Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads

Integrated 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.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-S12A remarkably quiet even at very close distances.
3 speed settings for full flexibility

3 speed settings for full flexibility

Providing 1200, 900 and 700 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-S12A FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.
Extensive cabling options

Extensive cabling options

The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved.
SSO2 Bearing

SSO2 Bearing

The 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.
Metal bearing shell

Metal bearing shell

In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the NF-S12A sports a CNC milled bearing shell made entirely from brass.
6-year manufacturer’s warranty

6-year manufacturer’s warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-S12A features an MTTF rating of more than 150.000 hours and comes with a full 6-year manufacturer's warranty.
NF-S12A FLX
FAN Specification
Size
120x120x25 mm
Mounting hole spacing
105x105 mm
Connector
3-Pin
Bearing
Blade Geometry
S-Series with Anti-Stall Knobs
Rotational Speed (+/- 10%)
1200 RPM
Rotational Speed with L.N.A. (+/- 10%)
900 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
700 RPM
Acoustical Noise
17,8 dB(A)
Acoustical Noise with L.N.A.
10,7 dB(A)
Acoustical Noise with U.L.N.A.
7,4 dB(A)
Static Pressure
1,19 mm H₂O
Static Pressure with L.N.A.
0,73 mm H₂O
Static Pressure with U.L.N.A.
0,51 mm H₂O
Max. Input Power
1,44 W
Max. Input Current
0,12 A
Voltage
12 V
MTTF
> 150.000 h
Scope of Delivery
  • Low-Noise Adaptor (L.N.A.)
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • 3:4-Pin Adaptor
  • 30cm Extension Cable
  • 4 Vibration-Compensators
  • 4 Fan Screws
Warranty
6 years
NF-S12A FLX
NF-S12A
Video Reviews
The following video reviews have not been created by Noctua. Responsibility for the information and views expressed in the videos lies entirely with the authors.
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30.03.2013 // eTeknix.com
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NF-S12A FLX Review

The Noctua 1200RPM fans (FLX and ULN) posted generally better scores than the SilverStone AP123 fans despite running at lower RPMs and being quieter. I think the results speak for themselves. [...] So we have a great deal of performance flexibility across the whole NF-S12A series, we have the extensive Noctua accessory bundle with each fan giving you even more flexibility to use your fans whichever way you want, we have the usual top notch build quality and reliability backed by Noctua’s 6 year warranty, we have mind boggling levels of research and development that have gone into these products and most importantly a price which is still competitive despite this best-in-class excellence that you just don’t expect to find on most fans. As I always seem to say with Noctua fan reviews the price is justified by the premium nature and excellent all-round capabilities of the product. If you want some excellent case fans then you cannot go wrong with the NF-S12A series. My only concerns are that relatively speaking the price is high, but like I have said I still feel this is justified, and again the aesthetics will not be to everyone’s tastes but the brown and beige colour scheme is what makes Noctua products unique. Without it they would just blend into to a market full of average fans when their fans are certainly far from average, though I do feel they could have made an effort to braid the cables all the way into the motor so the multi-coloured cabling on the rear isn’t visible.
Test verdict: "Noctua products never cease to amaze me with their innovation and performance and if I was going to put some 120mm fans into my case then these would be my first choice, without a doubt. That said, these fans are in my opinion deserving of the eTeknix Editor’s Choice award." (Ryan Martin, eTeknix.com)
29.08.2013 // TecCentral.de
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NF-S12A FLX Review

Im Einsatz zeigen die neuen Noctua-Lüfter dann sofort und nahezu uneingeschränkt ihre Stärken. Schon nach wenigen Sekunden ist klar, das sich die Geräuschemissionen des schon vom Werk aus recht leisen Nanoxia Deep Silence 1, noch weiter senken lassen. Als wäre dies nicht genug, lassen sich die beiden NF-S12A, wie auch der NF-A14 in ihrer Arbeitsgeschwindigkeit leicht nach unten korrigieren, ohne dabei an Performance, in diesem Fall Kühlleistung bzw. Luftdurchsatz, zu verlieren. Ein klares Zeichen, das Noctua mit der dritten Generation seiner NF-Lüfter, doch noch einen, wenn auch nur kleinen Schritt nach vorn machen konnte und im Premium-Segment nicht nur bei der Ausstattung, sondern auch der Leistung weiterhin Maßstäbe setzen kann. Ebenfalls lobenswert ist das breite Drehzahlband, welches von den NF-Lüftern abgedeckt wird. Die Spanne reicht hier, fein gestaffelt, von einer Anlaufgeschwindigkeit knapp unterhalb von 600 U/min. (ca. 50 %), bis hin zu leistungsorientierten 1200 U/min. (100 %).
Test verdict: "Noctua beweist mit der aktuellen Generation der NF-Lüfter sein geballtes Know-How im Bereich der Luftkühlung und bietet für nahezu jeden Einsatzzweck das passende Produkt in seinem Sortiment. Ganz klar haben die Österreicher es nicht geschafft, das Rad oder in diesem Fall den Gehäuse-Lüfter komplett neu zu erfinden, können aber mit Stolz behaupten, das mit Abstand Beste Gesamt-Konzept für performanceorientierte Silent-Systeme zu bieten. Die Fülle an wohl durchdachten Detaillösungen machen die Noctua NF-Lüfter zu einem ganz besonderen Gut und verhelfen diesen zu einer Art Ausnahmestatus. Materialwahl, Verarbeitung und alles in Summe, die Gesamtqualität, sind überragend und garantieren somit in ihrer Gesamtheit eine besonders lange Lebensdauer, was Noctua mit einer gewährten Garantiezeit von 6 Jahren unterstreicht." (Frank Meyer, TecCentral.de)
29.06.2013 // Vortez.net
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NF-S12A FLX Review

Noctua has devoted itself to quiet cooling. In that they have succeeded well. One measure of their insistence on quietness was their not bringing PWM products to market until they were ready to do it the Noctua way. “Fans” of Noctua’s fans long wrote about how they wanted PWM versions, yet there were no PWM fans from Noctua. But it turned out that Noctua was not ignoring PWM; their engineers were working on developing a silent PWM control. The clicking seen in other PWM fans – even quiet clicking – is completely absent in Noctua PWM fans. This started with their NF-F12’s, and has now extended to their A series. All are clickless. As well as can be measured in a non-professional setup, Noctua’s airflow specifications are accurate. You can listen to a fan and hear if it is quiet or not, and whether it makes unpleasant noises (Noctua fans are free of unpleasant noises). But airflow is another matter. Airflow takes special instruments to measure. It is comforting to know Noctua’s specifications on this are accurate; so you can use those specifications in your buying decisions. The various Low Noise Adapters and Ultra Low Noise Adapters are different for each of the fans. Clearly, they are tailored to achieve particular results. This may or may not be unique to Noctua fans. Interestingly, Noctua says nothing about it. The Noctua accessories are of good quality, and appear likely to last in extended usage. They are all handsomely sleeved as well. The fan frames are sturdy, and the corner cushions do not extend into the screw holes. That means the fans can be securely fastened with or without the cushions.
Test verdict: "Overall, the Noctua A series is a fine set of fans. Careful attention to airflow and acoustics, along with the best PWM circuits in existence, make these superb fans." (Ed Hume, Vortez.net)
26.04.2013 // HiTechLegion.com
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NF-S12A FLX Review

Noctua products are far from typical, not just in terms of aesthetic with the unique love-it-or-hate-it beige and brown color scheme but in terms of build quality as well. At its core, a cooling fan is essentially just a set of impellers rotating to push or pull air but Noctua fans takes the idea one step further and hones the science of cooling to an art form. This is evident from the moment you open the box and see the organized packaging and the accessory kit, carefully chosen with so much consideration. Every cable is covered and even the labels are printed in thick glossy paper and will not easily come off over time. The Noctua S12A series fans are premium products after all and it is also very evident in the price. While most case fans have an MSRP of $10 to 15 USD, the Noctua S12A costs $27 USD per fan (The lowest price currently that I could find is $23 from Amazon.com). Considering how much R&D Noctua puts in to their fan designs however, this isn’t surprising. Also, the build quality is beyond compare so it is somewhat justified. Is it practical? It is about as practical as a Ferrari in that it is an investment for the long run instead of just for the current build. With a MTBF of 150,000 hours and 6-year warranty, the Noctua S12A will outlast multiple system builds so it essentially pays for itself after a while. In terms of performance, the Noctua S12A series are designed primarily as a case ventilation fan. Despite improvements in design compared to its predecessors, Noctua offers the NF-F12 and the NF-P12 fans as superior choices for heatsinks and radiators due to their static pressure performance which the NF-S12A lacks. In our testing, the S12A was noticeably very quiet without any high pitch whine at maximum voltage and had a very even airflow distribution compared to other fans. Even when the low-noise and ultra-low noise adapters were added, the performance did not drop significantly and still cooled the overclocked CPU decently.
Test verdict: "Overall the Noctua S12A series provides flexible cooling options across three different versions. The price is noticeably higher than other fans but considering the longevity promised by the excellent build quality and the lengthy 6-year warranty, users eventually get their money’s worth. For the Noctua S12A’s technological innovations, unique design and extremely silent performance, it earns the HiTechLegion Editor’s Choice Award." (Ron Perillo, HiTechLegion.com)
19.04.2017 // Gamepur.com
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NF-S12A FLX Review

Noctua NF-S12A series is ideal for case fans, you can apply multiple fans on the front, top or on the back of a case. As we had said already having a decent CPU cooler matters a lot to get maximum from the case fans. For Air Coolers on CPU, these fans help a lot to draw out heat and push more and more cooler air. This maintains a decent CPU temperature on long run.
Test verdict: "Through our test we can conclude these fans are really designed for sheer performance. They are quite silent on high rpm and durable." (Joey S, Gamepur.com)
08.04.2017 // deviron.ru
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NF-S12A FLX Review

Во время проведения тестирования, шум данных вентиляторов практически не был слышен, поскольку был полностью заглушен корпусными вентиляторами.
Test verdict: "Несмотря на то, что данная серия была выпущена в начале 2013 года, она всё ещё не потеряла свою актуальность и предоставляет потребителю бескомпромиссное решение, обеспечивающее высокую производительности при низком шуме." (Vasily Klokov, deviron.ru)
07.04.2017 // TechLipton.pl
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NF-S12A FLX Review

Wydajność przy zastosowaniu radiatora powodującego jednak opór powietrza stoi na dobrym poziomie. Trzeba pamiętać, że ten model Noctuy nie jest produktem przeznaczonym typowo na chłodzenia, lecz do wentylacji obudowy. Mimo tego – jest naprawdę dobrze, niewiele gorzej niż w testowanych poprzednio Corsairach ML120.
Test verdict: "Wentylatory Noctua NF-S12A ULN, FLX oraz PWM nikogo nie pozostawią obojętnym. Albo się je lubi, albo nie – głównie ze względu na kolorystykę. Sama jakość wykonania, kultura pracy, wydajność oraz bogate wyposażenie to niewątpliwe plusy." (Krzysztof Hukałowicz, TechLipton.pl)
15.02.2017 // PcGaming.games
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NF-S12A FLX Review

Estos ventiladores tiene una calidad desde que tienes el producto en tus manos hasta que lo montas, impresionante. La capacidad de refrigeración de estos ventiladores resulta muy importante en mi caso, vivo en una zona muy cálida de España y llegamos en verano a temperaturas de hasta 38 grados en la sombra. Todos los años mi pc alcanza altas temperaturas por culpa del verano y unos ventiladores con estas capacidades mi PC lo agradecerá.
Test verdict: "Realmente lo que más me ha sorprendido son los niveles de ruido que genera, son prácticamente inapreciables incluso en el modelo ” que más ruido genera”." (Carlos Carraveo, PcGaming.games)
09.02.2017 // TechHardware.it
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NF-S12A FLX Review

A pieno regime risultano essere quasi inudibili, risultando più silenziose delle standard Cooler Master, migliorando ulteriormente la quantità di aria immessa, abbassando le temperature. Le ULN invece, sono assolutamente silenziosissime ed inudibili anche a case aperto.
Test verdict: "Le ventole si sono dimostrate eccellenti in tutto, c’è poco da dire. Packaging perfetto, prestazioni molto buone per la silenziosità offerta e ben sei anni di garanzia." (Tommaso Biallo, TechHardware.it)
25.01.2017 // GamesGuru.org
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NF-S12A FLX Review

Nie ma co się sprzeczać odnośnie do tych elementów. Jednakże premium oznacza również wysoką cenę. Pomimo upływu lat, NF-S12A nadal kosztuje niemało – około 81-85zł w zależności od wersji. Rekompensację takiej ceny możemy upatrzyć w, chociażby 6-letniej gwarancji.
Test verdict: "Wentylatory Noctua z serii NF-S12A to prawdziwy sprzęt premium, nie tylko z nazwy, ale również jakości wykonania, działania, długoletniej gwarancji czy obiecanej żywotności." (Filip Ciemiński, GamesGuru.org)

Installation Manual (PDF)

Information Sheet (PDF)

Can I use Low-Noise Adaptors with y-cables / multiple fans?

Yes, Low-Noise Adaptors (L.N.A.s) can be used with y-cables, but please make sure to use one L.N.A. per fan and to place the L.N.A.s between the y-cable and the fans as shown below. Never use one L.N.A. for two (or more fans) by placing it between the mainboard and the y-cable!

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Can I use Noctua fans in my system from Acer, Apple, Dell, HP, Lenovo or other major brands?

Noctua 12V fans comply with the established specifications for standard PC systems issued by Intel and AMD. Systems from Acer, Apple, Dell, HP, Lenovo or other major brands often deviate from these specifications e.g. by using proprietary fan headers, custom pin-alignments or pin-configurations, different methods of fan speed control, etc. This can lead to compatibility issues when using Noctua fans in systems from said brands. Some of these problems can be avoided with some technical knowledge, but especially BIOS related issues (e.g. errors or shutdowns due to low fan speed) can often not be resolved. As a result, Noctua does not officially support systems from Acer, Apple, Dell, HP, Lenovo or other major brands.

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