heading

El NF-S12A marca la tercera generación de ventiladores de caja silenciosos de la emblemática serie S12 de Noctua que ha recibido más de 250 premios y recomendaciones de prensa internacional. Ya que dispone de un diseño de aspas perfeccionado con Anti-Stall Knobs (Bultos Anti-Estancamiento) complementado por el nuevo marco AAO (Optimización Acústica Avanzada), el NF-S12A mejora el índice de flujo de aire por ruido con respecto al de su aclamado predecesor en hasta un 8%. La versión del modulador PWM usa el circuito integrado NE-FD1 diseñado por Noctua para un control de velocidad completamente automático a través de un conector de 4 pines y viene con un adaptador de reducción de ruido para disminuir la velocidad máxima durante el control del modulador PWM de 1200 a 900 rpm. Gracias a su magnífica suavidad en su funcionamiento, el rodamiento SSO2 y la reconocida calidad de Noctua lo convierten en una opción de primer orden en disipación silenciosa de cajas.

  button  Anti-Stall Knobs
button  Macro AAO
button  Diseño de entrada paso a paso
button  Microestructuras de superficie interna
button  Rodamientos SSO2
button  Cojinetes metálicos
button  NE-FD1 PWM IC
button  ¿Qué ventilador 120mm es adecuado para mí?
Detalles
El Galardonado Diseño S12

El Galardonado Diseño S12

El NF-S12A dispone de la tercera versión de la evolución del clásico Diseño de Aspas Rectas de Noctua que ha logrado innumerables recomendaciones de periodistas especializados en hardware y entusiastas de todo el mundo para su serie S12. Mejor optimizado para una aún mejor eficiencia de flujo de aire por ruido, haciendo que el NF-S12A sea un ventilador de caja silencioso ideal.
Anti-Stall Knobs (Bultos Anti-Estancamiento)

Anti-Stall Knobs (Bultos Anti-Estancamiento)

Los del NF-S12A reducen el fenómeno de separación del flujo en situaciones de impedancia media y alta aumentando por tanto el margen de estacamiento del ventilador. Esto significa que el NF-S12A es aún más versátil que su reconocido predecesor y puede alcanzar mejor rendimiento en disipadores y radiadores.
Marco AAO

Marco AAO

Los marcos AAO (optimización acústica avanzada) de Noctua cuentan con almohadillas antivibración integradas, así como con el diseño de entrada paso a paso y las microestructuras de superficie internas (ambos propiedad de Noctua), que perfeccionan aún más la eficiencia sonora y el rendimiento del ventilador.
Diseño de entrada paso a paso

Diseño de entrada paso a paso

El diseño de entrada paso a paso de Noctua añade turbulencia a la entrada de aire para facilitar la transición de flujo laminar a flujo turbulento, lo que reduce el ruido de entrada tonal, mejora la adjunción de flujo e incrementa la capacidad de succión, especialmente en entornos con espacio restringido.
Microestructuras de superficie interna

Microestructuras de superficie interna

Con los extremos de las aspas del ventilador en colisión con la capa límite creada por las Inner Surface Microstructures (microestructuras de superficie interna), la separación del flujo desde el lado de succión de las aspas mengua de forma significativa, lo que resulta en un ruido de paso entre las aspas menor, mejor flujo de aire y mayor eficiencia de presión.
Almohadillas antivibración integradas

Almohadillas antivibración integradas

Las almohadillas antivibración integradas, fabricadas en silicona extrasuave, minimizan la transmisión de las vibraciones por minuto, a la vez que mantienen la compatibilidad con todos los sistemas de montaje estándar y clips para ventilador utilizados en los disipadores.
PWM IC de diseño propio con SCD (Unidad de Conmutación Suave)

PWM IC de diseño propio con SCD (Unidad de Conmutación Suave)

Con soporte total para un control de velocidad PWM automático, el NF-S12A PWM usa el nuevo NE-FD1 PWM IC de diseño propio de Noctua que se integra con la tecnología Smooth Commutation Drive (SCD, Unidad de Conmutación Suave). Proporcionando impulsos de par más suaves, el SCD disminuye los ruidos de cambios del PWM y hace que el ventilador funcione de forma más silenciosa a velocidades bajas.
Low-Noise Adaptor  (Adaptador de Reducción de Ruido)

Low-Noise Adaptor (Adaptador de Reducción de Ruido)

El NF-S12A PWM viene con un Low-Noise Adaptor L.N.A. (Adaptador de Reducción del Ruido) que reduce la velocidad máxima del ventilador de 1200 a 900 rpm. El L.N.A. se puede usar tanto para usar el ventilador a una velocidad fija de 900 rpm como para fijar una velocidad máxima al usar el control de PWM automático.
Opciones de Cableado Extensible

Opciones de Cableado Extensible

El corto cable principal de 20cm del ventilador minimiza el lío de cables en situaciones típicas mientras que el cable de extensión de 30cm que se suministra permite un alcance extra cuando resulta necesario. Ambos cables están totalmente forrados.
Rodamientos SSO2

Rodamientos SSO2

El NF-S12A dispone de los reconocidos rodamientos optimizados SSO de segunda generación de Noctua. Con los SSO2, el imán posterior está situado más cerca del eje para proporcionar mayor estabilidad, precisión y durabilidad.
Cojinete de metal

Cojinete de metal

Con el fin de garantizar el máximo grado de precisión posible en su fabricación, una tolerancia mínima y una excelente estabilidad a largo plazo, el NF-S12A usa un cojinete CNC fresado hecho totalmente de latón.
6 años de garantía de fabricante

6 años de garantía de fabricante

Los ventiladores de Noctua son conocidos por su impecable calidad y su larga vida útil. Como todos los ventiladores de Noctua, el NF-S12A dispone de una MTBF de más de 150.000 horas con una completa garantía de fabricante de 6 años.
NF-S12A PWM
Especificaciones ventilador
Dimensiones
120x120x25 mm
Espacio entre orificios de montaje
105x105 mm
Conexión
4 pines
Rodamiento
Geometría de las aspas
Serie S con Anti-Stall Knobs
Tecnología del marco
Velocidad de rotación (+/-10%)
1200 RPM
Velocidad de rotación con L.N.A. (+/-10%)
900 RPM
Velocidad de rotación min. (PWM, +/-20%)
300 RPM
Sonoridad
17,8 dB(A)
Sonoridad con L.N.A.
10,7 dB(A)
Presión estático
1,19 mm H₂O
Presión estático con L.N.A.
0,73 mm H₂O
Potencia max.
1,44 W
Amperaje max.
0,12 A
Voltaje
12 V
MTTF
> 150.000 h
Volumen de entrega
  • Adaptador para reducción del ruido (L.N.A.)
  • Cable de 4 pines en forma de Y
  • Cable de extensión de 30 cm
  • 4 Vibration-Compensators
  • 4 tornillos de ventilador
Garantía
6 años
NF-S12A PWM
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.
language
language
language
language
language
language
11.11.2017 // HardManiacos.com
test.gif

NF-S12A PWM Opinión

Después de haber analizado y probado este disipador de Noctua, vemos que se trata de un buen componente, válido para procesadores de gama media o baja y perfecto para aquellos equipos de reducidas dimensiones, donde no tenemos mucho espacio para poder utilizar uno de mayor tamaño. En cuanto al ruido, éste casi no se nota, aún funcionando a bastantes revoluciones, gracias al diseño de las aspas y el soporte, además del perfil bajo del propio ventilador. Mehr lesen auf https://www.hardmaniacos.com/review-disipador-noctua-nh-l9a-am4/#AJD5OoBVex6QAUim.99
Resultado del análisis: "Por ello, le damos el premio de calidad-precio, recomendando este disipador para todos aquellos que necesiten una buena refrigeración de sus procesadores de gama media y no tengan mucho espacio en la torre del ordenador." (Daniel Rey, HardManiacos.com)
23.10.2017 // HardManiacos.com
test.gif

NF-S12A PWM Opinión

Las pruebas realizadas fueron, poner el equipo al 100% durante 10 minutos en diferentes modalidades, usando para ello el ventilador con PWM, para usar el control de la placa base, y uno de los otros dos ventiladores, ya que tienen el mismo conector de 3 pines, variando únicamente los conectores. Estos ventiladores están situados en la parte de atrás del ordenador para extraer el calor producido por el disipador de la CPU que está al lado de este. Para ello, usamos el programa Aida64 y comparamos los resultados de los ventiladores con uno estándar del mismo tamaño, usando éste como control. En la siguiente gráfica, podemos ver las diferencias de temperatura y revoluciones de las 3 pruebas, la de control con respecto a los otros dos ventiladores.
Resultado del análisis: "Después de haber analizado y probado estos ventiladores Noctua NF-S12A, podemos ver que se trata de unos ventiladores de reducidas revoluciones, pero no por ello menos eficientes, ya que, comparándolos con uno estándar, consiguen las mismas temperaturas con menos de la mitad de revoluciones, lo que se traduce en una reducción de ruido y consumo energético." (Daniel Rey, HardManiacos.com)
16.10.2017 // YairWorkShop.com
test.gif

NF-S12A PWM Opinión

איך אנחנו הולכים לבדוק את המאווררים?השתמשנו במחשב הראשי שלנו עם מארז סגור,נשאיר את המאוורר שהגיע עם המארז וכל פעם נוסיף את אחד מהמאוררים שקיבלנו לביקורת אה את ההשפעה שלהם על המערכת מבחינת טמפרטורה ורעש בזמן משחק,טמפרטורת החדר בממוצע עומדת על 22 מעלות ובדקנו כל מאורר במשך חצי שעה של משחק.
Resultado del análisis: "המאווררים של נאקטואה מספקים ביצועים טובים למרות השימוש שלנו בקירור סטוק של מעבד הרייזן,עוצמת הקול שלהם בזמן מאמץ סבירה בהחלט ובזמן מנוחה אתם פשוט לא תשמעו אותם." (Yair Zarfati, YairWorkShop.com)
26.09.2017 // The Streaming Blog
test.gif

NF-S12A PWM Opinión

The Noctua NF-S12A has a lot of flexibility. It offers an excellent balance between acoustics, performance and sturdiness. You are able to tweak the rpm therefore setting your own preference ratio for the sound reduction and fan speed. There is also an extensive Noctua accessory bundle for each of the three fan which gives the user a lot more flexibility than they already have. Noctua competes with the top brands in the market and yet manages to deliver one of the best. Every new release improves upon the former. The fans have been a lot quieter and have raised the airflow while still being able to retain the same RPMs. Despite the differences being minimal, it still hands down better than other alternatives. The technology is also quite fascinating, despite operating at the fan’s slowest rpms, it still manages to keep the processor at a good temperature. And if you compare it to other brands, at top speed, Noctua’s NF-S12A fans are still noticeably quieter. Not to mention it runs with less than half of the power of its competitors. On top of all this, we are given a 6 year manufacturer’s warranty giving the fans excellent support.
Resultado del análisis: "If one is looking for an amazing set of cooling fans for their new rig then the Noctua NF-S12A are a the perfect fit for you. Their fans are amazingly quiet and the amount of flexibility makes the Noctua NF-S12A all-around kick ass fans." (Grant Evans, The Streaming Blog)
23.09.2017 // HighTests.fr
test.gif

NF-S12A PWM Opinión

Pour le bruit, c’est vraiment intéressant et surprenant. Les ventilateurs tournent plutôt doucement, ce qui permet justement de limiter le bruit. A 900 tours par minute, dans un boitier, ils sont quasi inaudibles ! On est à 31 décibels maximum à 10 cm des ventilateurs, à 5V. C’est juste impressionnant ! La version PWM permet une plus grande vitesse de rotation. Arrivé à 1200 tours par minute, il devient audible, mais pas dérangeant. Les pâles des ventilateurs sont conçues de manière à diminuer drastiquement les nuisances sonores. Des excroissances placées au bout de celles-ci permettent d’éviter les perturbations dues aux mouvements forcées de l’air, qui produisent ce sont vibrant si dérangeant : les tourbillons.
Resultado del análisis: "Vous l’aurez deviné, gros coup de cœur pour ces ventilateurs. Ils sont silencieux, redoutablement efficaces et de bonne facture." (Elias Limouni, HighTests.fr)
12.09.2017 // PCPRO.es
test.gif

NF-S12A PWM Opinión

Tras probar los 3 modelos en nuestros equipos de pruebas, hemos comprobado que la versión PWM, es la que rinde con mayor eficacia, lo cual es normal dado el mayor caudal de aire que genera respecto a sus dos hermanos. Cualquiera de las 3 versiones son de lo mejor que podremos encontrar en el mercado en los que a ventiladores de 120mm se refiere, si bien, si lo que buscamos es rendimiento/silencio debemos escoger la versión FLX; Si buscamos Silencio absoluto, la versión ULN, escogiendo la versión PWM si lo que buscamos es el máximo rendimiento sin importar un ligero incremento en los dB/A.
Resultado del análisis: "Han sido muchos los ventiladores que han pasado por nuestro lab, pero pocos los que han demostrado una eficacia, potente caudal de aire así presión generada, como estos NOCTUA." (Miguel Ángel Garcia, PCPRO.es)
25.06.2017 // Najdiigru.ru
test.gif

NF-S12A PWM Opinión

Для сравнения эффективности вентиляторов Noctua NF-S12A нами был проведен простой тест. С системы охлаждения Cooler Master MasterLiquid 120 был снят один вентилятор(всего их два), и мы сравнили температуру процессора AMD Ryzen 7 1700 в стресс-тесте AIDA64 с работающим на максимальных оборотах комплектным вентилятором работающим на 2200 об/мин и Noctua NF-S12A PWM работающим на 1400 об/мин. Как видно из графика, вентилятор Noctua при куда меньших оборотах проиграл всего 0,6ºС при гораздо меньшем уровне шума.
Resultado del análisis: "Вентиляторы Noctua NF-S12A впечатляют своей производительностью, бесшумностью, количеством технологий, богатой комплектацией и надежностью, ведь производитель не боится давать шесть лет гарантии, что очень много для вентилятора." (Ульяна Шельдяева, Najdiigru.ru)
19.06.2017 // Top10Games.es
test.gif

NF-S12A PWM Opinión

La nueva gama de ventiladores Noctua NF-S12A son la solución perfecta para cualquier usuario que quiera obtener lo mejor en relación rendimiento/sonoridad. Con sus distintas alternativas de modelos podremos escoger el que mas se adapte a nuestras necesidad dependiendo si es la sonoridad, el flujo, el tamaño o la velocidad lo que queremos variar. Lo mejor es lo duro que trabaja Noctua con cada producto para proporcionar lo mejor que saben hacer, dar potencia, calidad y seguridad. Pues Noctua nos asegura que superarán las 150.000 horas de uso, que son unos 17 años de uso continuado.
Resultado del análisis: "Noctua ha realizado un buen trabajo desarrollando estos ventiladores Noctua NF-S12A los cuales son la solución perfecta para cualquier usuario gracias a sus variantes, las prestaciones y la calidad de sus componentes." (Adrián José Pérez Toré, Top10Games.es)
12.06.2017 // PC nadšenci
test.gif

NF-S12A PWM Opinión

Testy nám potvrdzujú kvalitu ventilátorov Noctua, no príjemne prekvapilo aj SilentiumPC, hlavne model Sigma Pro 120 PWM. Sklamaním sú ale ventilátory Reeven, ktoré sú drahšie ako SilentiumPC, no v testoch dosiahli horšie výsledky.
Resultado del análisis: "Ak hľadáte kvalitný a tichý ventilátor, Noctua je ten správny výrobca. Vo všetkých testoch ventilátory tohto výrobcu preukázali najlepšie teploty a najmenšiu hlučnosť, preto im udeľujeme zlaté ocenenie." (Tomáš Brestovanský, PC nadšenci)
22.05.2017 // Gizcomputer.com
test.gif

NF-S12A PWM Opinión

Pasamos ahora a repasar lo que tienen en común estos ventiladores, además de su aspecto y forma. Lo primero y mi juicio más importante es la garantía de 6 años que nos ofrece el fabricante. Además Noctua nos asegura que superarán las 150.000 horas de uso, que son unos 17 años de uso continuado. Los cojinetes SSO2 están diseñados para conseguir la mejor estabilización. Además está recubierto en metal mejorando la durabilidad y resistencia. Por otra parte, las pequeñas protuberancias en las aspas de los ventiladores permiten mejorar el flujo de aire. Además tenemos los pads antivibracioón antes comentados.
Resultado del análisis: "Pueden no ser los ventiladores más bonitos y no, no tienen LEDs, pero si buscas ventiladores silenciosos, fiables y muy bien construidos, estos son perfectos para ti." (Diego Egido, Gizcomputer.com)

Manual de instalación (PDF)

Hoja de datos (PDF)

I get a CPU fan error despite the fan is running!

Some mainboards display a CPU fan error when the fan speed falls below a certain threshold, e.g. 900rpm. If you want to run the fan below this speed (e.g. using the supplied U.L.N.A.), please adjust the threshold in the BIOS or disable CPU fan error warning.

Can I paint my Noctua fan in order to change its color?

Since even small variations in the layer of paint can lead to an imbalance of the impeller, resulting in vibrations, higher noise levels, increased stress on the bearing and thus reduced lifespan, we do not recommend painting the fan. Please note that for the reasons stated above, painting the fan will void your warranty.

The supplied y-cable is missing a wire at one of the two connectors, is it faulty?

No. As mainboards can process only one rpm-signal per fan header, it would cause problems if the cable transmitted rpm-signals of both fans. For this reason, one of the two connectors does not have an rpm wire and only the fan on the other connector will transmit an rpm signal. Automatic speed control of both fans will work independently from the second fan’s rpm signal.

How big is the NH-D15S and how much clearance does it provide for RAM and mainboard heatsinks? Copy

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

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 4-pin PWM fans on 3-pin fan headers?

PWM fans come with a 4-pin connectors for fully automatic speed control via your mainboard’s 4-pin PWM fan headers. Please note that 4-pin fans can also be connected to your mainboard’s 3-pin fan headers though. When connected to 3-pin fan headers, the fan will run at full speed (unless the mainboard supports voltage based speed control).

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

How can I find out the direction of airflow and sense of rotation?

When looking at the fan so that the circular sticker with the Noctua logo is facing you, the direction of airflow is towards you and the sense of rotation is clockwise:

P14

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.

My Noctua PWM fan starts to spin when the PC boots but then stops, what is wrong?

Some mainboards feature 4-pin fan headers that actually don‘t use a PWM signal on Pin 4 to control the fan speed but rather reduce the voltage on Pin 2 (like a standard 3-pin fan header). In this case, it may occur that the mainboard reduces the voltage so much that the fan stops. Please refer to your mainboard manual to check whether or not your mainboard has 4-pin fan headers that control the fan speed by reducing voltage on Pin 2 rather than by changing the PWM duty cycle on Pin 4:

4 pin fan header types

Note that mainboard manufacturers use different terms to indicate that Pin 4 is not being used for PWM control (e.g. “+5V”, “VCC” or “NC”), but if one of these terms is used, you can be sure that the fan header does not support PWM. If Pin 4 is described as “Speed Control” or “PWM” or the like, you can be sure that the fan header supports PWM.

Unfortunately, the description of Pin 2 is not always a clear indication as some manufacturers use terms such as “Fan PWR” or “Power” for both types of fan headers. However, if Pin 2 is described as “Speed Control”, you can also be sure that the fan header does not support PWM based speed control. If Pin 2 is described as “+12V”, this is a clear indication that the fan header supports PWM.

Please also note that in some cases, the descriptions of the pin layouts in the mainboard manuals may not be correct and some models actually allow you to switch the fan headers from voltage control mode to PWM control mode in the BIOS even though the pin descriptions do not indicate PWM support. We thus recommend to look for these options in the BIOS before taking other measures. In case of doubt, please contact your mainboard manufacturer.



To resolve the issue, you can:

  1. Choose a higher fan speed profile in the BIOS (e.g. „normal“ instead of „silent“, etc.) or deactivate automatic fan speed control and use a Low-Noise Adaptor instead.

  2. Use the mainboard‘s fan speed control software or 3rd party tools like Speedfan to regulate the fan speed. Unlike BIOS based fan speed control, the supplied software usually checks whether the fan has stopped and increases voltage accordingly or at least offer more options to set up the fan properly.

  3. If your mainboard features other 4-pin fan headers that use PWM for speed control, you can run multiple fans from these headers using Y-split cables. Make sure not to exceed the specified maximum power draw of the fan headers (usually 10-12W) though.

My Noctua PWM fan runs at a much higher minimum speed than advertised, what is wrong?

The specified minimum speed refers to the speed at 20% PWM duty cycle. There can be several reasons why the fan doesn‘t go as low as indicated:

  1. Many mainboards do not go below 40%, 50% or even 60% PWM duty cycle on case fan headers. Please refer to your mainboard manual to verify whether the fan header actually goes down to 20% duty cycle. If that's not the case, in some cases you can use the fan speed control software supplied with your mainboard to overcome these limitations and reduce the fan speed even further. However, 3rd party tools like SpeedFan offer greater flexibility and better options to work around the limitations imposed by the mainboard vendors.

  2. Some mainboards feature 4-pin fan headers that actually don‘t use a PWM signal on Pin 4 to control the fan speed but rather reduce the voltage on Pin 2 (like a standard 3-pin fan header). As the fan speed at minimum voltage is usually higher than the speed at 20% PWM duty cycle, the fan can not reach as low minimum speeds under voltage control as under PWM control. Please refer to your mainboard manual to check whether or not your mainboard has 4-pin fan headers that control the fan speed by reducing voltage on Pin 2 rather than by changing the PWM duty cycle on Pin 4:

    4 pin fan header types

    Note that mainboard manufacturers use different terms to indicate that Pin 4 is not being used for PWM control (e.g. “+5V”, “VCC” or “NC”), but if one of these terms is used, you can be sure that the fan header does not support PWM. If Pin 4 is described as “Speed Control” or “PWM” or the like, you can be sure that the fan header supports PWM.

    Unfortunately, the description of Pin 2 is not always a clear indication as some manufacturers use terms such as “Fan PWR” or “Power” for both types of fan headers. However, if Pin 2 is described as “Speed Control”, you can also be sure that the fan header does not support PWM based speed control. If Pin 2 is described as “+12V”, this is a clear indication that the fan header supports PWM.

    Please also note that in some cases, the descriptions of the pin layouts in the mainboard manuals may not be correct and some models actually allow you to switch the fan headers from voltage control mode to PWM control mode in the BIOS even though the pin descriptions do not indicate PWM support. We thus recommend to look for these options in the BIOS before taking other measures. In case of doubt, please contact your mainboard manufacturer.


    If your mainboard features other 4-pin fan headers that use PWM for speed control, you can run multiple fans from these headers using Y-split cables. Make sure not to exceed the specified maximum power draw of the fan headers (usually 10-12W) though.

I'm experiencing fan speed issues with my motherboard from Supermicro, what can I do?

The BIOS of many motherboard models from Supermicro expects a certain minimum fan speed (usually 700rpm), which is higher than the minimum fan speed that can be achieved with Noctua's PWM fan models. The BIOS may interpret the low minimum RPM of Noctua fans as a fan error and thus try to run the fan at 100% for a short period before going back to automatic control.. This can result in oscillating fan speeds and fan speed warnings in the BIOS or the fan management console.

Unfortunately there is usually no option to set a lower minimum value that would suit the low minimum speed of Noctua PWM fans.The issue can thus only be resolved by either disabling automatic fan speed control in BIOS, which will cause the fans to run at a constant speed, or by requesting a modified BIOS file from Supermicro, which takes the minimum fan speed of Noctua fans into account (charges might apply).

How can I check if my 4-pin fan header supports PWM?

Some mainboards feature 4-pin fan headers that actually don‘t use a PWM signal on Pin 4 to control the fan speed but rather reduce the voltage on Pin 2 (like a standard 3-pin fan header). As the fan speed at minimum voltage is usually higher than the speed at 20% PWM duty cycle, the fan can not reach as low minimum speeds under voltage control as under PWM control. Please refer to your mainboard manual to check whether or not your mainboard has 4-pin fan headers that control the fan speed by reducing voltage on Pin 2 rather than by changing the PWM duty cycle on Pin 4:

4 pin fan header types

Note that mainboard manufacturers use different terms to indicate that Pin 4 is not being used for PWM control (e.g. “+5V”, “VCC” or “NC”), but if one of these terms is used, you can be sure that the fan header does not support PWM. If Pin 4 is described as “Speed Control” or “PWM” or the like, you can be sure that the fan header supports PWM.

Unfortunately, the description of Pin 2 is not always a clear indication as some manufacturers use terms such as “Fan PWR” or “Power” for both types of fan headers. However, if Pin 2 is described as “Speed Control”, you can also be sure that the fan header does not support PWM based speed control. If Pin 2 is described as “+12V”, this is a clear indication that the fan header supports PWM.

Please also note that in some cases, the descriptions of the pin layouts in the mainboard manuals may not be correct and some models actually allow you to switch the fan headers from voltage control mode to PWM control mode in the BIOS even though the pin descriptions do not indicate PWM support. We thus recommend to look for these options in the BIOS before taking other measures. In case of doubt, please contact your mainboard manufacturer.


If your mainboard features other 4-pin fan headers that use PWM for speed control, you can run multiple fans from these headers using Y-split cables. Make sure not to exceed the specified maximum power draw of the fan headers (usually 10-12W) though.

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.

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 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 switches, routers or other network devices?

Noctua fans such as the 40, 60, 80 or 92mm NF-A series models are ideal for replacing noisy stock fans in switches, routers and other network devices in order to make them quieter and thousands of users have managed to significantly reduce the noise levels of their 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 network device before purchasing a Noctua fan for this purpose. Some of the common issues that can occur when replacing pre-installed fans are:

  • Different pin assignment: Whereas Noctua fans use the standardised pin assignment for PC fans (see this FAQ for details), some network devices use different assignments. For example, some devices have the power and GND or rpm and PWM pins swapped. Therefore please carefully verify that your 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 network devices 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 device uses the same pin functions.
  • Firmware speed control: Some network 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 network 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 device to display errors or even shut down because it suspects a fan failure.
  • Different power draw: Some network 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 network device 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. 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 fans 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 pre-installed fans in network devices. Please note that since there are so many different devices 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 pre-installed fans. Please contact your network device manufacturer for any questions regarding aspects such as the device’s pin alignment or fan monitoring and control.

¿Tiene alguna pregunta sobre uno de nuestros productos? ¡Por favor use este formulario para enviar una pregunta!