heading

Product discontinued. Successor model: NF-S12A FLX

Succeeding the vastly successful NF-S12, the NF-S12B is a next generation quiet fan featuring Noctua's advanced SCD2 technology as well as a highly optimised blade geometry with Bevelled Blade Tips that improves its award-winning predecessor's airflow efficiency by up to 10%. Topped off with Noctua's time-tested SSO-Bearing, 6 years warranty and versatile 1200/900/600 rpm speed settings, the NF-S12B FLX is a premium quality fan that offers full flexibility in quiet to ultra-quiet case cooling.


More information:
  NF-S12B Blade Design
  NF-S12B & NF-P12: Technical Backgrounds
  Which fan is right for me?

Details
Highly optimised impeller with Bevelled Blade Tips

Highly optimised impeller with Bevelled Blade Tips

Thanks to its further refined blade geometry with extended leading edges and Bevelled Blade Tips, the NF-S12B achieves up to 10% more airflow and static pressure than its much acclaimed predecessor at the same noise level.
3 speed settings for full flexibility

3 speed settings for full flexibility

Providing 1200, 900 and 600 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the FLX (Flexibility) version can be fine-tuned for superior airflow or maximum quietness.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

The latest version of Noctua's advanced SCD drive system ensures superb running smoothness by eliminating torque variations and switching noises.
SSO-Bearing

SSO-Bearing

Noctua's time-tested SSO-Bearing technology has become synonymous with supremely quiet operation and exceptional long-term stability.
NF-S12B FLX
Cooler Specification
Scope of Delivery
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • Low-Noise Adaptor (L.N.A.)
  • 4 Vibration Compensators
  • 3:4-Pin Adaptor
  • 4 Fan Screws
Warranty
6 years
FAN Specification
Bearing
Rotational Speed (+/- 10%)
1200 RPM
Rotational Speed with L.N.A. (+/- 10%)
900 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
600 RPM
Acoustical Noise
18,1 dB(A)
Voltage Range
12 V
MTTF
> 150.000 h
NF-S12B FLX
05.12.2012 // Games.lt
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NF-S12B FLX Review

Kalbant apie ventiliatorių dizainą, Noctua spalvos vienas dviprasmiškiausių klausimų kompiuterių rinkoje. Vieni jas dievina ir vien tą spalvą laiko aukščiausios kokybės etalonu, kiti negali pernešti. Ar jų dizainas yra gėris, ar blogis paliksiu nuspręsti kiekvienam. Komplektacija tikrai džiugina. Yra viskas ko reikia ir dar truputis. O pridedami priedai stebina ne vien kiekybe, bet ir kokybe. Pats ventiliatorius pasižymi puikiu pernešamo oro bei triukšmo santykiu, kas ir yra svarbiausia renkantis tokį gaminį. Net ir naudojant Neblogą vidutinės klasės Enermax ETS T40 TA aušintuvą bei Intel Core i5 2500K @ 4.5 GHz procesorių didelio skirtumo tarp pigesnio ventiliatoriaus nepajautėme. Bet jei naudotume daugiau karščio ventiliatoriams teikiančią sistemą skirtumas iškart išryškėtų. Aišku, kitas ventiliatorius skleidė didesnį triukšmą. Be to galingą ventiliatorių sukonstruoti didelio proto nereikia, o va galingą ir tylų - ne kiekvienas gali. Panaši situacija yra ir su dviejų tokių ventiliatorių naudojimu, kai sistema jų neišnaudojo. Atsiras sakančių, kad mokėti 80 litų už ventiliatorių nėra verta. Su jais visiškai nesutinku. Nė vienas pigesnis gaminys nepasiūlys tokių gerų tylos ir oro pralaidumo sąlygų, kas yra svarbu daug ventiliatorių turinčioms entuziastų sistemoms. Tačiau reikia turėti pakankamai stipriai kaistančią sistemą, kad pajaustumėt šio gaminio privalumus. Be to bėgant laikui investicija bent iš dalies atsipirks - pigiųjų ventiliatorių guoliai „sueina" labai dažnai, ir kartais juos tenka keis vos ne kiekvienais metais. Šiems ventiliatoriams tai negresia - jų gyvybingumo laikas didelis, be to suteikiama net šešių metų garantija.
Test verdict: "Noctua pagamino išties gera aušintuvą. Jis pasižymi idealiu sistemos vėsos palaikymu keliant minimalų triukšmą. Naudojant LNA ir ULNA adapterius galima tiek išlaikyti patenkinamą oro pernešimo galią, tiek pasiekti praktiškai absoliučią tylą." (Norvydas Davalga, Games.lt)
10.10.2012 // Go!GamingGiant
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NF-S12B FLX Review

Coming in, I expected a certain level of quality and performance from these fans. I mean after all, they ARE Noctua fans. What I got in return is exactly what I wanted — fans that keep everything in my PC extremely cool without making a bunch of noise. In fact, I use all four fans without any of the Low Noise Adapters, and I can’t even hear them. All you can hear is the air rushing through the side panel, which happens to be a foot away from me, on my desk.
Test verdict: "These are not cheap fans, but you get what you pay for. Noctua fans only cool slightly better than any other cheap $10-15 fan, they just happen to give you that small increase in cooling, while dropping the dB level dramatically." (DJ Dixon, Go!GamingGiant)
03.06.2012 // oZeros.com
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NF-S12B FLX Review

Como se puede ver, en IDLE no hubo mayor diferencia, sin embargo cuando el procesador recibía carga, el Noctua a 1200 RPM era capaz de rivalizar con el ventilador stock del TT Contac 30. Las velocidades 900 y 600 RPM son de muy baja sonoridad, sin embargo sacrifican el caudal de aire que entregan, lo que implica que las temperaturas de operación son mayores tal como se observa. Acá vemos el Delta de temperatura, el cual es la diferencia entre la temperatura ambiente (16,5°C) y la temperatura de operación. A menor Delta T°, mejor capacidad refrigerante. Se vuelve a corroborar que a 1200 RPM, el Noctua NF-S12B FLX es capaz de entregar un excelente caudal de aire y con baja sonoridad. Pero si usamos los adaptadores para bajar aun más el ruido, estaremos sacrificando temperaturas.
Test verdict: "Sinceramente antes de hacer este review, mi pensamiento era el de comprar un ventilador que simplemente cumpliera la función de tirar aire, pero después de todo una noche bebiendo café por el frio y probando este simpático producto, debo decir que mi opinión cambio bastante. Como ventilador para gabinete, puede llegar a ser inaudible si lo colocamos a la mínima velocidad, la cual de todas maneras entrega un generoso caudal de aire, lo que es excelente si consideramos colocar más de 1 ventilador en el case, cosa bastante común en la actualidad." (Jeremy Pérez Díaz, oZeros.com)
23.04.2012 // HW-Journal.de
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NF-S12B FLX Review

Ein Noctua Produkt muss sich immer hohen Erwartungen stellen und in der Regel wird man auch nicht enttäuscht. Eine hervorragende Verarbeitung, viel brauchbares Zubehör und eine niedrige Lautstärke. Diese Eindrücke bleiben bei uns nach diesem Test im Gedächtnis hängen.
Test verdict: "Ein Gehäuselüfter der Extraklasse. So heißt es oftmals, wenn dieser Lüfter empfohlen wird. Diesen Eindruck konnten wir auch voll und ganz bestätigen." (Sebastian Wochnik, HW-Journal.de)
23.01.2012 // NooBTECH.at
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NF-S12B FLX Review

Lediglich der Preis von durchschnittlich 17€ schränkt das Produkt auf einen enthusiastischen Käuferkreis ein. Aber wenn man die 6 Jahre Garantie betrachtet, den überkompletten Lieferumfang und wie viele Lüfter bei mir schon nach 2 Jahren das zeitliche gesegnet haben (meist Lagerschaden), wäre dies wiederum eine günstigere Option. Qualität hat nun mal ihren Preis. Lieber einmal tiefer in die Tasche greifen und für lange Zeit 'Ruhe' haben [...].
Test verdict: "Hier hat der Hersteller wahrlich nicht zu viel versprochen. Der Lüfter verhält sich extrem laufruhig und ist bei mittlerer Drehzahl von 900 U/min kaum hörbar (Lagergeräusch nahezu null). Der hohe Luftdurchsatz sorgt für frischen Wind im Gehäuse." (Herbert Mandl, NooBTECH.at)
14.01.2012 // O.Cantinho.da.Programação
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NF-S12B FLX Review

Após a avaliação do Noctua NF-S12B podemos concluir que estamos perante um produto de grande qualidade de construção e de um bom desempenho. Mais uma vez a Noctua demonstrou a sua capacidade de fabricar soluções de qualidade e desempenho elevado mantendo os níveis de ruído bastante baixos ao mesmo tempo que aplica 6 anos de garantia.
Test verdict: "Na verdade a Noctua conseguiu surpreender-me com a produção de ruído ser muito baixa, enquanto consegue manter os níveis de desempenho em níveis muito interessantes conseguindo manter qualquer sistema fresco." (Nuno Santos, O.Cantinho.da.Programação)
24.12.2011 // Team Hardware Venezuela
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NF-S12B FLX Review

Noctua no es por nada una marca reconocida entre los entusiastas de la refrigeración extrema, ya que sus productos no son solo utilizados por los que les gusta la refrigeración por aire, sino que su amplia gama de ventiladores es lo suficientemente versátil para utilizarse en los radiadores de refrigeración liquida y otras aplicaciones. El NF-S12 es un excelente ejemplo de lo anterior y este nuevo ventilador diseñado a partir de este, permanece imperceptible al oído humano pero brindando un excelente flujo de aire lo suficientemente fuerte como para reducir hasta en 10 grados la temperatura de nuestro procesador en condiciones normales. La calidad de la construcción, así como las nuevas tecnologías implementadas por Noctua en este rediseño del NF-S12, hacen del NF-S12B un maravilloso sucesor que brinda un excelente desempeño térmico y sin interrumpir nuestro ambiente con el clásico zumbido del ventilador común. Durante nuestras pruebas pudimos constatar que a 900rpm es imperceptible y prácticamente hay que ver las aspas girar para verificar si el ventilador esta funcionando o no, puesto que el ruido no lo podíamos percibir con nuestros oídos. Las tecnologías de aspas extendidas y biseladas, así como los refinamientos y optimizaciones del motor con el sistema SCD2 y los rodamientos SSO de Noctua, han perfeccionado un ventilador que permitirá un buen flujo de aire para mantener fresco el interior de nuestro PC.
Test verdict: "Sin mas que agregar podemos concluir que es el mejor ventilador que hayamos probado hasta el día de hoy, ofreciendo un excelente balance entre ruido y rendimiento." (Arturo Martinez, Team Hardware Venezuela)
05.12.2011 // HWMaster.com
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NF-S12B FLX Review

Come facilmente evincibile da tutti i grafici ufficiali pubblicati da Noctua, si capisce che l’azienda in questa ventola ha utilizzato tutte le sue migliori tecnologie ed accorgimenti tecnici al fine di migliorare il flusso d’aria nonchè la pressione statica mantenendo il rapporto Flusso D’aria/Rumore e Pressione Statica/Rumore sempre ai minimi livelli, confrontando questo modello con gli altri della casa si nota come la NF-S12B FLX sia la ventola più “flessibile” in quanto può operare con emissioni acustiche inpercettibili come la sorella NF-S12B ULN ma, aumentando il regime di rotazione, può garantire flussi d’aria e pressioni statiche alla pari della sorella maggiore NF-P12.
Test verdict: "Durante i nostri test abbiamo avuto modo di apprezzare al meglio le qualità di questa ventola, a partire dalla solida carcassa in plastica rigida che è molto robusta, inoltre gli accorgimenti tecnici ed ingegneristici derivanti dal settore dell’aviazione che la casa ha svolto su questo modello hanno dato i loro frutti facendo della NF.S12B FLX una ventola silenziosa ma al contempo prestante, valida per ogni tipo di utilizzo e da avere in ogni case che si rispetti." (Rocco Eduardo Battista, HWMaster.com)
04.12.2011 // PC Revue 12/2011
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NF-S12B FLX Review

Rakúska spoločnosť Noctua uviedla na trh nový ventilátor NF-S12B FLX, určený na použitie v počítačových skrinkách alebo na chladiči procesora. Veľkosťou 120 mm sa zaraďuje medzi veľké a nízkootáčkové modely. Jeho maximálne otáčky sa pohybujú na úrovni 1200 ot./min. Pri tejto rýchlosti dokáže vytvoriť prietok vzduchu vyše 100 m3/h a vyvinúť statický tlak 1,31 mm H20. Hlučnosť udávaná výrobcom je skvelých 18,1 dBA. Takéto výborné hodnoty sú dosiahnuté najmä vďaka novému dizajnu lopatiek a použitiu fluidných samostabilizačných ložísk (SSO).
Test verdict: "Tichý, ale výkonný ventilátor do skrinky" (Ondrej Macko, PC Revue 12/2011)
21.09.2011 // WhatsWithJeff.com
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NF-S12B FLX Review

Noctua NF-S12B FLX improves the cooling of the internal component by 2 degrees, which is impressive despite the low rpm and noise. Noctua did their job done how they tested this fan that can be better than 1600rpm standard fans with much better airflow/noise ratio. I prefer to low noise and still achieve the same amount of airflow to other noisy fans. Well if much airflow is needed but at a price of higher noise level which is annoying in everyday usage. Noctua captured the perfect choice for silent PC solution without losing the performance level of other aftermarket fans.
Test verdict: "If you’re going for a case fan that has low noise and can achieve better airflow and pressure for intake and exhaust than stock fans or aftermarket, the Noctua NF-S12B FLX is an excellent choice, you won’t regret buying this! " (Peter Amadeus Lo, WhatsWithJeff.com)

Information Sheet (PDF)

I've got 2 adapter cables with the cooler. What's the difference between these cables?

The Low-Noise-Adapter (L.N.A.) and Ultra-Low-Noise-Adapter (U.L.N.A.) reduce the speed of the fan to 900 / 600 rpm:

Vibration Compensators Installation

My fan doesn’t spin when I start up the PC - is it faulty?

If you've connected the fan directly (or using the supplied Low-Noise or Ultra-Low-Noise-Adaptors) to your mainboard, it's possible that the mainboard's automatic fan controller doesn't provide the required starting voltage due to the low CPU temperature. Please verify whether the fan starts spinning at higher CPU temperatures, remove any Low-Noise or Ultra-Low-Noise Adaptors, deactivate your mainboard's automatic fan controller in the BIOS or connect the fan directly to the power supply using the supplied 3:4-pin adaptor.

The fan doesn’t start with the Ultra-Low-Noise Adaptor (ULNA)!

Unfortunately, many Gigabyte mainboards use a special control circuit that can lead to start-up problems in conjunction with the Ultra-Low-Noise Adaptor (ULNA). This control circuit remains active even when automatic fan control is disabled in the BIOS. In these cases, please use the fan without the ULNA or connect it directly to the power supply (or an external fan controller) in order to ensure reliable operation with the ULNA.

How should I clean my Noctua fan?

Fans inside computer cases tend to accumulate dust over longer periods of usage. In order to maintain maximum performance, please clean your fans regularly using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please do not use a vacuum cleaner as this may apply excessive force to the fan and do not put the fan under running water as water residues inside the motor may lead to short circuits.
In order to ensure flawless operation over many years of usage, Noctua’s premium grade SSO bearings are fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

Can I disassemble my fan for cleaning (or other purposes, e.g. painting)?

In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

It is thus recommended to clean your fans using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please don’t use a vacuum cleaner as this may apply excessive force to the fan.

Can I run Noctua 3-pin fans on 4-pin PWM connectors and use my mainboard’s automatic fan controller?

You can simply connect our fan's 3-pin connector to the 4-pin PWM sockets of today's mainboards so that the fourth pin that transmits the PWM signal is left blank (due to the shape of the connector, there's no danger of reversing polarity). Some mainboards (e.g. current Gigabyte models) are capable of controlling fans not only via PWM, but also by adjusting the supplied voltage. In some cases, this may require you to change BIOS options like "Fan Control Mode" from "PWM" to "Voltage" or "Analog". Please consult your mainboard's manual in this regard. However, some mainboards use an "auto" setting by default that automatically chooses PWM or voltage based regulation according to the connected fan. Automatically controlling the fan speed may not possible on mainboards that pulse the power rather than lowering the fan voltage.

PWM PWM

What pin configuration do Noctua 12V fans use?

All Noctua fans feature the standard pin-configurations set out in the Intel and AMD specifications. These standard pin-configurations are used on most mainboards and fan controllers today:

pin configuration

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.

Can Noctua fans be used to replace noisy stock fans in NAS devices?

Noctua fans such as the 40, 60, 80 or 92mm NF-A series models are ideal for replacing noisy stock fans in NAS devices in order to make them quieter and thousands of users have managed to significantly reduce the noise levels of their NAS units this way. However, while it is easy and straightforward to replace the fans in some cases, it can be very difficult in others, so Noctua strongly recommends that users carefully research if it is possible to easily replace the fan(s) of their NAS device before purchasing a Noctua fan for this purpose. Some of the common issues that can occur when replacing NAS fans are:

  • Different pin assignment: Whereas Noctua fans use the standardised pin assignment for PC fans (see this FAQ for details), some NAS units use different assignments. For example, some devices have the power and GND or rpm and PWM pins swapped. Therefore please carefully verify that your NAS device uses the same pin assignment as standard fans. Experienced users may also change the pin assignment by cutting and resoldering the fan cables, but please note that this will void your Noctua manufacturer’s warranty.
  • Different pin functions: Noctua fans use the standardised pin functions for PC fans (see this FAQ for details); however, some NAS units use fans where certain pins serve a different function. For example, some devices use the RPM pin for “power good” signals. Therefore please carefully verify that your NAS device uses the same pin functions.
  • Firmware speed control: Some NAS devices demand a certain maximum or minimum fan speed. If the new fan doesn’t have the same or similar maximum or minimum speed, the device may display errors or even shut down.
  • Different starting voltage: Most NAS devices use voltage-based speed control. If the new fan has a higher starting voltage than the original fan, it may not start up right away. This may lead the NAS device to display errors or even shut down because it suspects a fan failure.
  • Different power draw: Some NAS devices monitor the fan’s power draw. If the new fan has a lower power consumption than the stock fan, the device might display errors or even shut down.

Please note that most NAS manufacturers don’t provide detailed documentation regarding fan compatibility and control, so users who want to replace the fans of their devices usually have to rely on “How to” guides, blog and forum posts or video tutorials. For example, there are excellent video tutorials available for changing the fans in popular Synology NAS models (DS416j, DS1515+ and DS1812+ in English, DS416/DS415/DS916/DS216/DS214 and DS1515+ in German). Please also note that fan compatibility and control can vary from model to model and even from revision to revision even if the devices stem from the same manufacturer. As a result, it is important to make sure that the information or guidelines you rely on when replacing your NAS fan are applicable to your specific model as well as your specific hardware and firmware revision.

Due to the possible issues listed above, Noctua recommends that only experienced users attempt to replace their NAS fans. Please note that since there are so many different NAS models and most of them lack documentation for aspects such as fan compatibility and control, Noctua customer support cannot assist you with compatibility issues when replacing NAS fans. Please contact your NAS manufacturer for any questions regarding aspects such as the device’s pin alignment or fan monitoring and control.

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!

D15S

Which Noctua fan or CPU cooler should I buy? How to choose the right model?

Not sure which Noctua product to buy? Our detailed buying guides for fans and CPU coolers help you to choose the model that works best for you.

Do you have a question concerning one of our products? Please use this form to pose a question!