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El NF-A15 es un ventilador silencioso de 140 mm de gran calidad y de marco redondo que cumple con el estándar de Advanced Acoustic Optimisation AAO (Optimización Acústica Avanzada) de Noctua. El marco del NF-A15 dispone de agujeros de montaje de 120 mm (espaciamiento de 105 mm) y ha sido ampliado a 150 mm de ancho para proporcionar un rendimiento superior a los disipadores de CPU de alta gama. Ya que dispone de características propias de un diseño aerodinámico sofisticado como Flow Acceleration Channels (Canales de Circulación Acelerada), el NF-A15 incrementa el reconocido rendimiento de disipación silenciosa del NF-P14 que tan premiado ha sido. El PWM IC especialmente diseñado por Noctua para un control de velocidad totalmente automático y los rodamientos SSO2 garantizan una suavidad de funcionamiento magnífica y una excelente estabilidad a largo plazo. Con un cableado modular, un adaptador de reducción de ruido y 6 años de garantía de fabricante, el NF-A15 es una opción extraordinaria para cumplir con las máximas exigencias.
Detalles
Superando al tan premiado NF-P14

Superando al tan premiado NF-P14

El ventilador NF-P14 se ha convertido en la opción por excelencia entre los entusiastas de PC que buscan ventiladores silenciosos de 140 mm de alta calidad. Gracias a su profunda optimización aerodinámica, el NF-A15/14 proporciona una presión estática más alta y aún mejor índice de flujo de aire por ruido que el de su aclamado predecesor.
Marco redondo de 140 mm con un ancho de 150 mm

Marco redondo de 140 mm con un ancho de 150 mm

El NF-A15 está hecho a medida para su uso con modernos disipadores de CPU de alta gama: Al mismo tiempo que su ancho de 150 mm coincide con la de los disipadores de alta gama, su altura de 140 mm hace que no sobrepase la parte superior garantizando así mejor compatibilidad con cajas. Además, los agujeros de montaje estándares de 120 mm del NF-A15 (espaciamiento de 105 mm) resultan en una mejora en rendimiento ideal para ventiladores de caja o de procesador de 120mm.
Flow Acceleration Channels (canales de circulación acelerada)

Flow Acceleration Channels (canales de circulación acelerada)

El rotor del NF-A15 dispone de Flow Acceleration Channels (Canales de Circulación Acelerada) por el lado de succión. Aumentando la velocidad del flujo de aire en las regiones cruciales exteriores de las aspas, esta medida reduce la separación del flujo en el lado de succión y resultando así en una mayor eficiencia y menor ruido de vórtice.
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.
Rodamientos SSO2

Rodamientos SSO2

El NF-A15 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-A15 usa un cojinete CNC fresado hecho totalmente de latón.
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-A15 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-A15 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.
Consumo ultra bajo

Consumo ultra bajo

Aunque el rendimiento ha sido mejorado, el NF-A15 consume solo 0,96W, lo que resulta en una reducción del 20% comparando con su predecesor. Esto no solo lo hace inocuo para el medio ambiente sino que también ayuda a ahorrar en la facturar de la electricidad.
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-A15 dispone de una MTBF de más de 150.000 horas con una completa garantía de fabricante de 6 años.
NF-A15 PWM
Especificaciones ventilador
Dimensiones
140x150x25 mm
Espacio entre orificios de montaje
105x105 mm
Conexión
4-Pin PWM
Rodamiento
Geometría de las aspas
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
19,2 dB(A)
Presión estático
1,51 mm H₂O
Presión estático con L.N.A.
0,89 mm H₂O
Potencia max.
0,96 W
Amperaje max.
0,08 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-A15 PWM
A-Series fans
12.06.2017 // PC nadšenci
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NF-A15 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)
08.01.2017 // tinysilentpc.se
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NF-A15 PWM Opinión

The 1200 RPM version peaked at 651 RPM at very sudden high CPU load, which was very gentle, and not noticeable. With LNA, the 1200 RPM version got also about 10% decrease fan RPM at sudden CPU load, which is a decrease it didnt really need, since it was already very gentle, even at bursts / sudden CPU loads.
Resultado del análisis: "Noctua NF A15 PWM 1200 RPM version got excellent automatic speed control (PWM), silence, sound character, and air flow. It is really in a class of its own!" (Robert Andersson, tinysilentpc.se)
03.01.2017 // HardManiacos.com
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NF-A15 PWM Opinión

Primeramente probamos el equipo con el ventilador que trae de serie, comprobando así la diferencia al colocarle más tarde el segundo ventilador. En el primer caso llegamos a una temperatura máxima de 95ºC después de tener al 100% el equipo durante un tiempo. A continuación procedemos a colocar el segundo ventilador y realizamos la misma prueba de estrés, dándonos una temperatura máxima de 84ºC, viendo así la reducción de temperatura al poner este segundo ventilador.
Resultado del análisis: "Como conclusión, vemos como al colocar el segundo ventilador NF-A15 PWM junto al disipador NH-U14S, en las pruebas realizadas, mejora la eficiencia del conjunto, reduciendo en unos 10ºC la temperatura con respecto al uso del propio ventilador de serie. Con lo que, si tenemos un equipo al que le realizamos algo de OC al procesador o si queremos mejorar la duración de éste componente, teniéndolo a unas temperaturas más bajas, os recomendamos el uso de este segundo ventilador, con lo que reduciremos la temperatura de la CPU." (Daniel Rey, HardManiacos.com)
18.01.2016 // TechArena.in
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NF-A15 PWM Opinión

Noctua NF-A15 PWM is a full fan that requires quite nice amount of space. Many mid tower and full tower CPU case have slots on the top side, on the front and on the back. Some case also have slots on the side panels. The fan sites pretty well on the top I think that would be a good place or else the front bottom is also good enough. It is easy to setup, and thanks to the extension cable that can let you to manage the cable. I had connected the fan on the below setup. I am already having a liquid cooler on my system. That adds more to the advantage. Noctua NF-A15 PWM is capable of giving good amount of airflow inside the case that is necessary for servers and gaming pc.
Resultado del análisis: "Noctua NF-A15 PWM costs around Rs.3000 approx on Amazon. This amount would be high for a single fan, but if you are ready to spend on a high performance fan, then this one is worth to go for." (Rakesh Khetan, TechArena.in)
09.02.2015 // QWERTYmag.it
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NF-A15 PWM Opinión

In questa recensione ci siamo realmente resi conto di quanto Noctua sia attenta ai dettagli e alla cura dei propri prodotti anche in delle “semplici” ventole che poi, in questo caso specifico, semplici non sono visto l’elevata cura nella produzione e nelle tecnologie adottate. Ci ha stupito moltissimo il fatto di ritrovare tutte le tecnologie citate nell’introduzione anche nelle ventole di dimensione ridotta come le NF-A4. Siamo decisamente soddisfatti sia dalle prestazioni in termini di efficienza/rumore, sia dal bundle che dai prezzi decisamente in linea con quelli di altri produttori ma assolutamente superiori in termini di caratteristiche e prestazioni. Attribuiamo a tutta la NF-A Series il premio Gold Award per l’innovazione tecnologica e la cura dei particolari che L’azienda ha dimostrato in questa serie di ventole super-efficienti.
Resultado del análisis: "Ventole per ogni tipo di esigenza. Noctua con la serie NF-A ha pensato proprio a tutti e a tutto proponendo prodotti di altissima qualità e tecnologia mantenendo un ottimo rapporto qualità/prezzo. Decisamente apprezzata la cura dei dettagli e del bundle che rendoni queste ventole il TOP DI GAMMA sul mercato." (Davide Torno, QWERTYmag.it)
17.11.2014 // HWready.it
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NF-A15 PWM Opinión

Sleeving dei cavi e dotazione bundle sempre fantastico, l’azienda Austriaca non si smentisce mai da questo punto di vista. Facile il montaggio con i gommini rapidi in dotazione e l’utilizzo con le prolunghe e gli adattatori presenti, inoltre tutte le ventole sono munite dei gommini anti-vibrazione a gli angoli. Le ventole da 140mm e 150mm sono più efficienti e silenziose delle comuni e quasi sempre usate da 120mm, infatti le Noctua in esame di comportano benissimo! Perfette, silenziose ed adatte ad ogni utilizzo. Le versioni PWM riescono a combinare in modo fantastico silenziosità e potenza dissipante, fanno il loro dovere in ogni situazione di utilizzo: nei case per creare il flusso d’aria, sul dissipatore per CPU e sui radiatori dell’impianto a liquido, insomma versatili ed affidabili.
Resultado del análisis: "Qualità dei materiali superba (come sempre), Noctua rimane un punto di riferimento per le ventole. Abbiamo provato 4 modelli, 3 da 140mm ed 1 da 150mm, tutti fantastici" (Santoro Luigi, HWready.it)
02.09.2014 // ActualidadHardware.com
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NF-A15 PWM Opinión

Tras probar las serie NF-A de 140mm podemos decir que estamos ante cuatro grandes ventiladores, en general silenciosos y con un buen caudal aire. De la serie NF-A14 tenemos el modelo FLX que es silencioso y mueve un buen caudal de aire. El modelo ULN es el más silencioso de los analizados, es inaudible aunque su caudal no es excesivamente alto pero suficiente para refrigerar nuestra torre. El modelo PWM es silencioso eso si, a máximas revoluciones empieza a sonar algo más, moviendo un gran caudal de aire. De la serie NF-A15 el modelo PWM es el que más caudal mueve de los cuatro modelos analizados, a máximas rpm ya suena algo pero es normal debido al gran flujo de aire que genera. Concluimos que son ventiladores muy similares, cuyas diferencias son la velocidad de rotación. El modelo ULN está especialmente diseñado como ventilador auxiliar por su baja sonoridad. El modelo NF-A14 FLX destaca por ser silencioso y tener un buen rendimiento, pudiendo regularle las rpm mediante los adaptadores que incluye. El modelo NF-A14 PWM destaca por ofrecer un gran rendimiento regulando las rpm forma automática. Y el modelo NF-A15 PWN que tiene la particularidad de que dispone agujeros de montaje de 120mm, destacando su gran caudal de aire y sonoridad.
Resultado del análisis: "No hace falta decir nada más, que hemos analizados unos grandes ventiladores muy versátiles, silenciosos y con un gran rendimiento, así que no podemos dejar de recomendarlos." (Jose Maria Martinez Perdigones, ActualidadHardware.com)
01.05.2014 // Conseil Config
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NF-A15 PWM Opinión

Comme d'habitude chez Noctua les nuisances sonores sont très basses, ils sont tous inaudibles à 5v et se font entendre à 12v, à part pour le ULN qui lui reste quasiment inaudible même à fond! Les ventilateurs produisent tous un son grave (comme tous ceux de la marque) qui n'est pas gênant et les moteurs sont dépourvus de bruits parasites, un très bon point.
Resultado del análisis: "Nous voici arrivé au terme de ce test, que dire de ces Noctua NF-A14 ? On voit bien qu'ils sont de la même famille que les NF-S12A et continuent dans l'excellence, que ce soit au niveau des performances que dans le bundle en passant par un SAV au top et 6 ans de garantie. Vous ne pouvez pas vous tromper en optant pour un de ces ventilateurs" (Christian Marchini, Conseil Config)
08.12.2013 // infoBIT.pl
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NF-A15 PWM Opinión

Pozostaje więc pytanie, czy mogę polecić zakup recenzowanych "śmigieł". Dla pewnej grupy odbiorców na pewno będzie to bardzo dobra opcja. Wykonanie nie pozostawia żadnych złudzeń, to produkt najwyżej klasy i nie oszczędzano tutaj na materiałach. Nie muszę chyba wspominać o świetnym wsparciu technicznym ze strony producet i 6-letniej gwarancji. Należy zatem pamiętać, że płacąc te 80 - 85 zł, nie płącimy tylko za sam produkt, ale też za całą otoczkę w postaci właśnie supportu, który nie zawodzi.
Resultado del análisis: "Nie jest to zatem sprzęt dla każdego, bo nie wszyscy wymagają tak wiele, jednak myślę, że zasługuje na moją rekomendację." (Wojtek Braś, infoBIT.pl)
28.11.2013 // PCElite.pl
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NF-A15 PWM Opinión

Na pochwałę zasługuje pomysł stworzenia wentylatora o rozpiętości śmigieł jak w wentylatorze 150mm, a zrobienie mocowań o rozstawach jak w zwykłym 140mm. Wygląd wentylatora urzeka. Połączenie kolorów jest trafione. Nie brakuje dodatków. Duży plus za bardzo niski poziom szumów wydobywających się z wentylatora. Łożyska są nie słyszalne. Noctuna zrobiła faktycznie produkt najwyższej klasy.
Resultado del análisis: "Wentylator cechuje bardzo ładny wygląd, oraz świetna jakość wykonania. Jest cichy i całkiem wydajny, oraz oferuje system montażu 150mm wentylatora na 140mm miejscach." (Arkadiusz Byś, PCElite.pl)

Manual de instalación (PDF)

Hoja de datos (PDF)

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 independent from the second fan’s rpm signal.

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 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 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.

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.

Can use the NF-A15 fan on my Noctua CPU cooler?

The NF-A15 is fully compatible with the NH-U12P, NH-C12P and NH-C12P SE14. On the NH-D14 and NH-C14, the NF-A15 fan can only be installed using optional fan clips. For this, please contact our customer service.

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

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.

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.

I get a CPU fan error using my Noctua PWM fan, is it faulty?

Noctua PWM fans feature a minimum speed of 300rpm to allow for ultra quiet operation when your CPU is at idle state and doesn’t require higher cooling performance. Some mainboards display error messages such as “CPU fan error” during the booting process when the fan speed is below a certain level. If you get such error messages using your Noctua PWM fan and if such options are available in your BIOS, please either adjust the minimum fan speed monitoring limit to 200rpm or increase the minimum PWM duty cycle. If your BIOS doesn’t offer these options, please disable CPU fan errors. For detailed information on BIOS fan settings, please consult your mainoard’s manual or contact your mainboard manufacturer.

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).

Does the NF-A15 PWM that comes with Noctua coolers run at a different speed (1500rpm) than the retail model (1200rpm)?

Yes, the NF-A15 PWM bundled with our heatsinks is specified to run at 1500rpm (see cooler specifications for details) and the retail model is specified to run at 1200rpm (see fan specifications for details). The 1200rpm retail model is ideal for setting up push/pull configurations in combination with the coolers’ 1500rpm stock fan because the combination of the 1500 and 1200rpm models provides a better balance of performance and noise than the combination of two 1500rpm versions. On dual-tower coolers such as the NH-D15S, we recommend to run the 1500rpm version in the center and the 1200rpm version on the front. On single-tower coolers such as the NH-U14S, we recommend to run the 1500rpm version on the front and the 1200rpm version on the back of the cooler. The NA-YC1 y-cable supplied with the retail fan can be used in order to control both fans via one PWM fan header. In this case, both fans will scale individually according to the PWM duty cycle supplied by the motherboard, e.g. they will run at ~1500/1200 respectively at 100% duty cycle, ~750/600rpm at 50% duty cycle, etc. Both at 100% and lower speeds, the speed difference between the fans reduces resonance phenomena and thus helps to achieve the best balance of performance and noise.

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.

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