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Concebida para las aplicaciones industriales más exigentes que necesitan un rendimiento de refrigeración mejorado y una protección más avanzada, el NF-A14 industrialPPC (Refrigeración de rendimiento protegido) de Noctua es una versión robusta y de alta velocidad del galardonado modelo de la compañía. Gracias a la increíble eficiencia aerodinámica del diseño del NF-A14 y al uso de un nuevo motor trifásico, la versión industrialPPC ofrece una capacidad de flujo de aire y presión superiores, al mismo tiempo que mantiene los niveles de ruido y de consumo de energía bajos frente a los ventiladores de alta velocidad. Mientras que su construcción en poliamida reforzada con fibra de vidrio y su certificada protección contra el agua y el polvo hacen que el NF-A14 industrialPPC sea adecuado para su uso en ambientes extremos, los reconocidos rodamientos SSO2 garantizan un tiempo medio de vida entre fallos (MTBF) de más de 150.000 horas. Este producto cuenta con la contrastada fiabilidad de Noctua y con 6 años de garantía del fabricante, por lo que el NF-A14 industrialPPC es la elección ideal para las aplicaciones más exigentes que necesitan caudales de aire superiores y una fiabilidad máxima.
Detalles
Diseño NF-A14 galardonado

Diseño NF-A14 galardonado

Tras recibir más de 100 premios y recomendaciones de la prensa internacional, el NF-A14 de Noctua se ha convertido en la mejor y más segura elección para las necesidades de refrigeración de 140 mm. Su reconocida eficiencia ha convencido a decenas de miles de clientes en todo el mundo.
Versión industrialPPC de 2000 rpm

Versión industrialPPC de 2000 rpm

Gracias a su elevada velocidad máxima de 2000 rpm, el NF-A14 industrialPPC-2000 ofrece un mayor rendimiento si lo comparamos con la versión de 1500 rpm. La robusta construcción en poliamida, característica de la serie industrialPPC, y las características de protección avanzadas hacen que el ventilador sea ideal para las aplicaciones industriales más exigentes.
Diseño del motor trifásico

Diseño del motor trifásico

Mientras que la mayoría de ventiladores axiales utilizan motores monofásicos con 4 ranuras, los ventiladores industrialPPC de Noctua cuentan con un diseño trifásico con 6 ranuras, lo que ofrece una transición más suave entre ranuras y, de este modo, permite un funcionamiento aún más suave y silencioso, una reducción de las vibraciones y una eficiencia energética sin precedentes.
Eficiencia energética mejorada

Eficiencia energética mejorada

Mientras que el NF-A14 estándar es uno de los ventiladores de 140 mm y 1500 rpm más eficientes, la versión industrialPPC con motor trifásico ofrece una reducción de un 10 % más en el consumo energético al compararlo con la versión de 2000 rpm.
Construcción en poliamida reforzada con fibra de vidrio

Construcción en poliamida reforzada con fibra de vidrio

Tanto el rotor como el marco de los ventiladores industrialPPC de Noctua están fabricados en su totalidad con poliamida reforzada con fibra de vidrio. Esto hace que los ventiladores sean aún más robustos y resistentes que los ventiladores estándar de PBT reforzados con fibra de vidrio.
Protección IP52 certificada contra el agua y el polvo

Protección IP52 certificada contra el agua y el polvo

Gracias a una capa de barniz especial que cubre el motor y la placa de circuito impreso (PCB), el NF-A14 industrialPPC tiene una calificación de protección IP52. Esto quiere decir que no solo es altamente resistente al polvo, sino que también es resistente a las gotas de agua, al equivalente de 3 mm. de precipitaciones por minuto.
Flow Acceleration Channels (canales de circulación acelerada)

Flow Acceleration Channels (canales de circulación acelerada)

El rotor del NF-A14 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-A14 industrialPPC cuenta con la segunda generación, aún más optimizada, de los renombrados y eficaces rodamientos SSO de Noctua. Con los SSO2, el imán trasero se coloca más cerca del eje para proporcionar una mejor estabilidad, precisión y durabilidad.
Cojinete metálico

Cojinete metálico

Para garantizar el grado más elevado posible de precisión en la fabricación, una tolerancia mínima y una excelente estabilidad a largo plazo, el NF-A14 industrialPPC ostenta un cojinete CNC fresado fabricado completamente en latón.
PWM IC de diseño propio con SCD

PWM IC de diseño propio con SCD

Al proporcionar un control de la velocidad PWM completamente automático, el NF-A14 industrialPPC utiliza el NE-FD2 PWM IC, diseñado especialmente por Noctua para los motores trifásicos. El NE-FD2 integra la tecnología patentada Unidad de Conmutación Suave (SCD) de Noctua, que suprime los ruidos de conmutación PWM y, por tanto, hace que el ventilador sea más silencioso a velocidades más bajas.
6 años de garantía del fabricante

6 años de garantía del fabricante

Los ventiladores de Noctua son conocidos por su impecable calidad y su larga vida útil. Como todos los ventiladores de Noctua, el NF-A14 industrialPPC dispone de un tiempo medio de vida entre fallos de más de 150.000 horas y de una garantía total del fabricante de 6 años.
Personalizable para clientes de la industria

Personalizable para clientes de la industria

Previa solicitud por parte de los clientes de la industria, algunas características, certificados, opciones de empaquetado y accesorios pueden personalizarse. Por ejemplo, podemos ofrecer versiones de 24V, diferentes conectores y velocidades, diferentes longitudes de cable o certificados UL y TÜV. No dude en contactar con nosotros a la hora de solicitar dichas opciones personalizables.
NF-A14 industrialPPC-2000 PWM
Especificaciones ventilador
Dimensiones
140x140x25 mm
Espacio entre orificios de montaje
124,5x124,5 mm
Conexión
4-Pin PWM
Rodamiento
Geometría de las aspas
Tecnología del marco
AAO
Velocidad de rotación (+/-10%)
2000 RPM
Velocidad de rotación min. (PWM, +/-20%)
500 RPM
Sonoridad
31,5 dB(A)
Presión estático
4,18 mm H₂O
Potencia max.
2,16 W
Amperaje max.
0,18 A
Voltaje
12 V
MTTF
> 150.000 h
Volumen de entrega
  • Ventilador
  • 4 tornillos de ventilador
Garantía
6 años
Ingress Protection
IP52
Material
Poliamida reforzada con fibra de vidrio
Tipo del motor
NF-A14 industrialPPC-2000 PWM
29.10.2016 // Top10Games.es
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NF-A14 industrialPPC-2000 PWM Opinión

Noctua ha trabajado muy bien y ha realizado correctamente su trabajo con esta nueva gama, más destinada a equipos tipo servidores que estén encendidos mucho tiempo, dado a que posee un buen caudal de aire y una larga duración. También debido a sus revoluciones, ofrecen más ruido que su anterior gama Redux, un dato quizás importante a la hora de adquirir uno de estos IndustrialPPC. Noctua también ha mejorado en el aspecto de la personalización, pues ha mejorado, permitiendo añadir colores personalizados a nuestros ventiladores IndustrialPPC gracias a la gama de accesorios Chromax, la cual nos ha encantado.
Resultado del análisis: "Noctua ha lanzado esta gama de ventiladores muy profesionales con un buen caudal de aire y refrigeración. Además gracias al soporte de su nueva gama Chromax, podemos personalizarlo para que se adapte como nos gusta a nuestro equipo." (Adrián José Pérez Toré, Top10Games.es)
29.09.2016 // MacFay Hardware
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NF-A14 industrialPPC-2000 PWM Opinión

En conclusion, c’est un produit qui vaut son prix de 30€.  Certains le trouverons surement trop cher et pas assez sexy pour le prix, mais au vu des degrés gagnés en remplaçant seulement un ventilateur, je suis juste bluffé. On note que les ventilateurs NF-A14 PPC-2000 sont évidement garantis 6 ans, ce qui n’est pas négligeable.
Resultado del análisis: "Noctua nous laisse encore une fois avec un produit de qualité, que ce soit niveau design ou performances, ils sont décidément vraiment au top sur toute la ligne !" (Alexis Fayet, MacFay Hardware)
26.09.2016 // JotaReviews.pt
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NF-A14 industrialPPC-2000 PWM Opinión

Como já foi dito as Noctua IndustrialPPC são ventoinhas para quem pretende o maior desempenho possível e que aguentem qualquer tipo de ambiente, são ventoinhas com uma construção fabulosa e com um alto desempenho. Nos nossos testes no Noctua NH-D15S as ventoinhas apresentaram bons resultados, sendo que quem pretender silencio estas ventoinha são imediatamente excluídas e com isto quero dizer que o nível de ruído pode-se tornar bastante incomodativo. A nível de acessórios poderiam incluir um adaptador para reduzir a voltagem e até mesmo acessórios para fixar as mesmas.
Resultado del análisis: "No geral é um produto que recomendamos a quem pretende ter o maior desempenho possível e que não se importe com o nível de ruído. A qualidade de construção é o factor chave na escolha destes modelos." (João Teixeira, JotaReviews.pt)
12.05.2016 // Hardware.Info
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NF-A14 industrialPPC-2000 PWM Opinión

The efficiency test, in which we test what the airflow is at a set noise level of 30 dB(A), is in our opinion the most important, because we prefer to see coolers that are silent and cool well. The best ones are the Noctua NF-A14 industrialPPC-2000 140mm IP67 PWM and the Noiseblocker NB eLoop 140mm 1200 rpm PWM, which produce 32.7 cfm at 30 dB(A). The first one is relatively expensive, but aimed at industrial application and moreover waterproof.
Resultado del análisis: "The most efficient and thus "best" 140mm fans are the Noctua NF-A14 industrialPPC-2000 140mm IP67 PWM and the Noiseblocker NB-eLoop 140mm 1200rpm PWM. Both deserve an Ultimate award." (Farzin Parham, Hardware.Info)
05.05.2016 // Madshrimps.be
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NF-A14 industrialPPC-2000 PWM Opinión

The 24V fans are not ideal to be mounted on radiators since we can only supply a maximum of 12V to them, at least in the silent mode, because they were only rotating at 300RPM ( barely moving any air around ); in performance mode, the speed has gone up to 740RPM, making a noticeable difference in cooling performance while remaining dead-silent. The NF-A4 industrialPPC 12V 140mm fans were a different story because with the silent profile set they were rotating at about 660RPM (dead-silent), while the performance mode had them rotating at 1150RPM. In this mode they were producing noticeably less noise than the NZXT variants, while having a better cooling performance, at a lower rotation speed! At all times, the ambient inside the room was kept steady at 22.5 degrees Celsius.
Resultado del análisis: "The NF-A4 industrialPPC 140mm fans are very well built and can be used for both industrial and PC chassis applications; the 24V versions are ideal as case fans because they produce little to no noise at half the voltage they receive inside a computer chassis, but if you are also planning on replacing the fans on the water cooling radiators, you have to get the 12V models. The 12V NF-A4 industrialPPC 140mm PWM fans will be ran at higher speeds in order to cool the radiator fins properly, while keeping the noise levels as low as possible thanks to the integrated technologies." (Stefan Alexandru Mileschin, Madshrimps.be)
21.03.2016 // Turkchip.com
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NF-A14 industrialPPC-2000 PWM Opinión

Noctua'nın detaylara verdikleri önem sayesinde Industrial fanlar ile soğutma teknolojisini bir adım ileriye taşıırken, hava üfleme basıncı, sessizlik ve kalite konusunda tartışılmaz ürünler üretmişler. Noctua fanları kasamıza montaj ettiğimizde her şey çok değişti. Kasa birden sessizleşti ve ısılarda gözle görülür düşüş oldu.
Resultado del análisis: "Özetle Noctua Industrial fanlar; kalitesi, yüksek hava üfleme gücü, sessizliği ve kişiselleştirebilir oluşu ile Turkchip Golden Award ödülünü hak eden çok başarılı ürünler." (Murat Yildirim, Turkchip.com)
19.03.2016 // Hardware.Info
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NF-A14 industrialPPC-2000 PWM Opinión

De efficiëntietest, waarbij we testen wat de airflow is bij een vaste geluidsproductie van 30 dB(A), is wat ons betreft echter het belangrijkst, omdat wij graag koelers zien die stil zijn én goed koelen. De beste zijn de Noctua NF-A14 industrialPPC-2000 140mm IP67 PWM en Noiseblocker NB-eLoop 120mm 1200rpm PWM, die bij 30 dB(A) nog 32,7 cfm produceren. De eerste is relatief duur, maar gericht op industriële toepassingen en onder meer waterdicht.
Resultado del análisis: "De meeste efficiënte en daarmee “beste” 140mm ventilators uit de test zijn de Noctua NF-A14 industrialPPC-2000 140mm IP67 PWM en Noiseblocker NB-eLoop 140mm 1200rpm PWM. Beide verdienen een Ultimate Award." (Koen Crijns, Hardware.Info)
09.03.2016 // SmallFormFactor.net
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NF-A14 industrialPPC-2000 PWM Opinión

The Noctua Redux and IndustrialPPC ranges add a much needed customisation to their range. Of course, the Redux fans are of an older design, and the performance may suffer as a result. However, the greys of the Redux and the black of the IndustrialPPC range enables system builders to more thoroughly theme their build and thus the sacrifice in performance or price may be considered worth it. The IndustrialPPC range also adds a ruggedness that some systems will require – water and dust resistance will enable significantly longer lifetimes with a higher MTBF.
Resultado del análisis: "The usual Noctua product quality is still to be found here, and these fans are well worth considering for your system. Though the IndustrialPPC (and, let’s face it, the standard Noctua product line) remain quite expensive for the functionality they provide, the Redux line brings excellent acoustics and performance to more accessible price points. And as for the IndustrialPPC fans, we get the feeling that many enthusiasts will happily look over the price point in the quest for the best." (John Morrison, SmallFormFactor.net)
23.02.2016 // DeathCaverna.it
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NF-A14 industrialPPC-2000 PWM Opinión

Noctua con la serie Industrial propone il frutto di anni di ricerche per proporre sul mercato un prodotto di massima qualità con standard tipici dei prodotti destinati ad usi professionali. Un prodotto con prestazioni di prim’ordine e caratteristiche di rilievo che lasciano esterrefatti dalla mole d’aria che riescono a muovere, il tutto con un rumore che è si elevato, ma che grazie al design unico delle pale, è meno fastidioso di quanto si pensi. Perchè un conto è misurare i dB, un’altro analizzarne il reale fastidio e, come sappiamo, a pari dB possiamo avere diversa percezione del rumore. Noctua anche questa volta ha rasentato la perfezione, dopo averle testate in diverse situazioni possiamo dire di trovarci di fronte ad un prodotto davvero fantastico, che rispetta gli standard qualitativi eccelsi a cui ci ha abituato la casa austriaca, un prodotto che, grazie allo standard “industriale” ed alle protezioni presenti possiamo definire come un punto di riferimento per qualità e durata. Certo queste certificazioni e garanzie hanno un prezzo, ma siamo sicuri che spendendo meno risparmieremmo?
Resultado del análisis: "Il voto della DeathCaverna è di 5 stelle su 5, Noctua con queste Industrial fornisce un solido compromesso fra eccellenza, qualità dei materiali, sicurezza ed efficienza. Insomma il TOP al giusto prezzo!" (Alessandro Bertoni, DeathCaverna.it)
10.02.2016 // EnosTech.com
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NF-A14 industrialPPC-2000 PWM Opinión

Jumping right into it and there is no denying the performance the industrialPPC range has to offer. Not only did they out-perform the fans I tested them against, they have a lot of other features that will allow them to perform better than your average fans. For one, the IP67 rating not only means they are water and dust proof, this also adds longevity to the fans as nothing will be getting in the motor and essentially slowing it down over time. Not only did they knock a good few degrees of my CPU temps during the test, they were also noticeably quiter than the fans they were tested against. When I say noticeably, I do in fact mean that, I could actually hear that they were a lot quieter than the other fans on test at the time.
Resultado del análisis: "The industrialPPC fans offer great performance and design in a package designed for some serious cooling power, all in all a very worthy buy if you can make use of things like the IP67 rating." (Ben Enos, EnosTech.com)

Hoja de datos (PDF)

Can industrialPPC fans be used with fan controllers and resistor cables (Low-Noise Adaptors)?

Noctua recommends not to use industrialPPC fans with common PC fan controllers, resistor cables (Low-Noise Adaptors) or other devices such as potentiometers that work by applying (variable) resistance rather than actually generating different voltages such as a laboratory power supply does. Due to the higher internal resistance of the industrialPPC fans’ three phase motor, applying additional resistance will cause the fans not to start (e.g. with Low-Noise Adaptors) or to have high starting speeds (e.g. with most common PC fan controllers). Please note that the industrialPPC fans feature starting voltages between 5.5V and 6V and can be run at these voltages on devices such as laboratory power supplies or mainboard fan controllers which actually generate lower voltages rather than applying resistance. Noctua thus recommends to use either PWM or voltage based mainboard fan control or laboratory/industrial power supplies for controlling the speed of industrialPPC fans.

4-pin PWM 3-pin
Mainboard fan control PWM based yes no
Mainboard fan control voltage based yes yes
Resistor cables (Low-Noise Adaptors) no no
Common PC fan controllers no
(high starting speed)
no
(high starting speed)
Laboratory/industrial power supplies yes yes

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).

Can I use Low-Noise Adaptors for industrialPPC fans?

No, Low-Noise Adaptors are not compatible with Noctua’s industrialPPC series.

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).

Which Noctua 140mm fans are optimised for airflow, which are optimised for static pressure?

Noctua only distinguishes between airflow optimised and pressure optimised fans in its 120mm range (see this page for details). For 140mm fans, there is no such distinction: Both the NF-A14 and the NF-P14 redux models are true all-rounders that provide outstanding levels of airflow and static pressure. Either of them works excellent both for case cooling and for use on radiators and heatsinks.

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.

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