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Le NF-A20 est un ventilateur silencieux 200mm de haute qualité et hautement optimisé. Construit autour d’un cadre AAO (Advanced Acoustic Optimisation) et bénéficiant d’optimisations aérodynamiques telles que les Flow Acceleration Channels, le NF-A20 permet au format 20cm de bénéficier des performances de ventilation et de silence plusieurs fois récompensées de la série A de Noctua. La version PWM est dotée du circuit intégré propriétaire NE-FD1 IC qui permet un réglage totalement automatique de la vitesse via les connecteurs de ventilation 4-broches. Ce dispositif permet, en fonction des besoins et exigences, de trouver le meilleur compromis possible entre performance et niveau sonore. Le NF-A20 bénéficie de la qualité de construction Noctua et est doté du roulement SSO2 Bearing, la référence incontournable, qui garantit un fonctionnement d’une souplesse incroyable; il devient ainsi l’arme absolue des utilisateurs les plus exigeants.
Please refer to our case compatibility list for detailed compatibility information.

Détails
La célèbre qualité Noctua accessible au format 20cm

La célèbre qualité Noctua accessible au format 20cm

Alors qu’un nombre croissant de boîtiers PC sont équipés de ventilateurs 20cm (en façade latérale, en succion ou en refoulement), la qualité des ventilateurs d’origine ou disponibles en option sur le marché reste controversée. Le NF-A20 constitue quant à lui une solution clairement haut de gamme, fidèle à la célèbre série A de Noctua.
Espacement des trous de fixation 154mm, 110x180mm et 170mm

Espacement des trous de fixation 154mm, 110x180mm et 170mm

Afin de garantir une compatibilité étendue avec les boîtiers actuels, le NF-A20 dispose de 3 réglages possibles au niveau des trous de fixation : alors que les espacements 154x154mm et 110x180mm sont idéaux pour remplacer la plupart des ventilateurs 200mm, l’espacement 170x170mm est traditionnellement utilisé pour les ventilateurs 230 et 250mm qui peuvent ainsi être aussi remplacés par le NF-A20*.
Canalisateurs de flux (Flow Acceleration Channels)

Canalisateurs de flux (Flow Acceleration Channels)

La turbine du NF-A20 est munie de canalisateurs de flux sur la face succion du ventilateur. L'accélération du flux générée aux extrémités des pales permet de créer une succion plus massive, moins dispersée, et accroit ainsi l'efficacité tout en réduisant les perturbations sonores liées aux vortex.
Cadre AAO

Cadre AAO

Les cadres AAO (Advanced Acoustic Optimisation) de Noctua sont équipés de silentblocs anti-vibrations et bénéficie d'optimisations exclusives permettant de repousser encore plus loin les limites de la performance et du silence : Stepped Inlet Design and Inner Surface Microstructures.
Conception en escalier de l'admission

Conception en escalier de l'admission

La conception en escalier de l'admission de Noctua ajoute une turbulence au flux entrant permettant ainsi un passage progressif d'un flux laminaire à un flux turbulent. Ce phénomène réduit les émissions sonores initiales, améliore la cohésion du flux et augmente la capacité de succion en particulier dans les environnements où l'espace fait défaut.
Conduit de contournement à microstructures

Conduit de contournement à microstructures

Les extrémités des pales évoluant à proximité de la surface intérieure du conduit (caractérisée par la présence d'une microstructure), la séparation des flux qui s'opère au niveau de la succion est quasi inexistante. Cette optimisation permet de réduire les émissions sonores liées au mouvement des pales, améliore le flux d'air ainsi que le niveau de pression.
Silentblocs anti-vibration intégrés

Silentblocs anti-vibration intégrés

Les silentblocs anti-vibration intégrés, fabriqués à base de silicone extra souple, amoindrissent la transmission des micro-vibrations tout en assurant une parfaite compatibilité avec les systèmes de fixation et les agrafes pour ventilateurs de ventirads.
Système exclusif PWM IC avec SCD

Système exclusif PWM IC avec SCD

Compatible avec les systèmes de contrôle de vitesse automatisé PWM, le ventilateur est pourvu du tout dernier circuit NE-FD1 PWM IC qui intègre la technologie SCD (Smooth Commutation Drive). En générant des impulsions de couple moins brutales, le SCD élimine les nuisances sonores liées aux commutations du PWM pour une ventilation moins bruyante à vitesse réduite.
Adaptateur Faible Bruit

Adaptateur Faible Bruit

Les NF-A20 PWM sont livrés avec un adaptateur faible bruit (L.N.A. pour Low Noise Adaptator) qui fait chuter la vitesse maximale de 800 à 550rpm. Le L.N.A. convient aussi bien pour un fonctionnement à vitesse fixe (550rpm) que pour une utilisation en mode PWM bridé.
Options étendues de câblage

Options étendues de câblage

Le premier câble pour ventilateur, court de 20cm, permet de minimiser l'encombrement dans le cadre d'utilisations courantes. L'extension fournie, d'une longueur de 30cm, permettra quant à elle de résoudre les problèmes éventuels de distance. Ces deux câbles sont entièrement gainés et un câble en Y (4-pin) autorisera la connexion d'un second ventilateur sur la même borne PWM, pour un contrôle automatisé.
Roulement SSO2

Roulement SSO2

Le NF-A20 se voit doté de la célèbre référence du roulement Noctua : le SSO. Il s'agit ici de la toute nouvelle génération, encore plus optimisée. Le SSO2 est en effet équipé d'un aimant arrière plus proche de l'axe pour une meilleure précision, longévité et stabilité.
Garantie Constructeur de 6 ans

Garantie Constructeur de 6 ans

Les ventilateurs Noctua sont connus pour leur qualité irréprochable et leur étonnante longévité. Comme tous les ventilateurs de la marque, le NF-A20 affiche un MTTF de plus de 150 000 heures de test et se voit assorti d'une garantie constructeur de 6 ans.
* Etant donné qu’aucun standard industriel n’a été défini à ce jour quant aux écartements des trous de fixation pour les ventilateurs 200mm, 220mm, 230mm ou 250mm, veuillez bien vérifier le type de perforation sur votre boîtier ainsi que l’espace disponible (le NF-A20 a une épaisseur de 30mm alors que d’autres ventilateurs 200mm ne font que 20mm !) afin de vérifier la bonne compatibilité de votre boîtier avec le NF-A20.
NF-A20 PWM
Général
Notes and warnings
Please refer to our case compatibility list for detailed compatibility information.

Spécifications ventilateur
Dimensions
200x200x30 mm
Espacement des orifices de fixation
154x154, 110x180, 170x170 mm
Branchement
4 broches PWM
Type roulements
Géométrie des pales
Série A avec canalisateurs de flux
Vitesse de rotation (+/-10%)
800 RPM
Vitesse de rotation avec L.N.A. (+/-10%)
550 RPM
Vitesse de rotation min. (PWM, +/-20%)
350 RPM
Niveau sonore
18,1 dB(A)
Niveau sonore avec L.N.A.
10,7 dB(A)
Pression statique
1,08 mm H₂O
Pression statique avec L.N.A.
0,51 mm H₂O
Puissance consommée max.
0,96 W
Ampérage max.
0,08 A
Tension
12 V
MTTF
> 150.000 h
Volume de livraison
  • Adaptateur Faible Bruit (L.N.A.)
  • Câble en Y (4-pin)
  • Extension 30cm
  • Attaches anti-vibration NA-AV3
  • Attaches anti-vibration NA-AV4
  • Vis de fixation
Garantie
6 ans
NF-A20 PWM
A-Series fans
Video Reviews
The following video reviews have not been created by Noctua. Responsibility for the information and views expressed in the videos lies entirely with the authors.
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04.10.2017 // NewEsc.com
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NF-A20 PWM test

Das fans que recebemos o destaque vai provavelmente para a primeira fan mainstream de 200mm da Noctua que a introduz com dois modelos, PWM com 4-pin, para um melhor controlo da nossa parte, e o FLX com 3-pin apenas, para um controlo automático. As NF-A20 PWM e NF-A20 FLX seguem as linhas principais da companhia, integrando a melhor tecnologia Noctua. Desde a moldura AAO, para redução do ruído, ao controlador PWM NF-FD1 no caso da primeira, para garantir o melhor controlo das velocidades da ventoinha, e rolamentos SSO2 reconhecidos pela sua estabilização, precisão e durabilidade. Isto, com 6 anos de garantia do fabricante! A esta junta-se a nova ventoinha slim de 120mm, com apenas 15mm de espessura, perfeita para os radiadores no topo das caixas quando temos falta de espaço. E as ventoinhas de 40mm, com opção de 5v para menor velocidade e menor ruído. Vindo da Noctua só esperamos qualidade na hora de testar, em termos de fluxo de ar e ruído, a Noctua é das melhores companhias. A Noctua não se foca só nas ventoinhas, mas em tudo o que sirva estas no sistema. A companhia austríaca tem uma vasta oferta de adaptadores e acessórios de montagem. Alguns desses os seus extras acompanham mesmo as ventoinhas nas respectivas caixas, como os adaptadores LVA/LNA que ajudam a reduzir os níveis de ruído ao estrangular a voltagem. Mas o destaque desta vez vai mesmo para o Noctua NA-FC1, um pequeníssimo controlador de ventoinhas.
Verdict du test: "A Noctua não desilude, demonstrando mais uma vez saber o que faz. A introdução de novas soluções na sua principal linha é muito bem vinda." (Filipe Teixeira, NewEsc.com)
02.10.2017 // PC Update
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Pour essayer de mettre en perspective l’intérêt d’un tel monstre, nous l’avons benché dans un PC assemblé dans le boîtier Prodigy avec une configuration de joueur, à savoir un i5-4670K et une GeForce GTX 780 Ti. Nous avons comparé ce Noctua A20 avec un ventilateur BitFenix Spectre Pro 200 mm ainsi qu’avec le 120 mm d’origine du boîtier et en limitant la rotation du 120 mm à 1000 tours pour rester silencieux (les 200 mm étant à fond, respectivement à 800 et 900 tpm). En mettant le PC en charge ludique (la démo du dernier 3Dmark en boucle), la température du CPU refroidi par un NH-U12S passe de 59° avec le 120 mm à 56° avec le 200 mm BitFenix et 55° avec le 200 mm Noctua et c’est surtout le GPU qui en profite réduisant de 85° à 76° et 72°. Sachant que le Noctua est en plus le plus inaudible des trois, on comprend que la qualité du célèbre fabricant autrichien est au rendez-vous.
Verdict du test: "Noctua ne sort pas des produits aussi souvent qu’on aimerait, mais au moins, la qualité est toujours au rendez-vous. C’est encore valable cette fois avec trois séries de ventilateurs atypiques, mais les meilleures dans leurs domaines d’application. Le prix est certes premium, mais en adéquation avec les performances, le bundle et même la garantie de 6 ans incluse avec tous ces ventilateurs." (Thomas Olivaux, PC Update No. 90)
01.10.2017 // EnlaceHW.com
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Los ventiladores Noctua NF-A20 son el resultado de años de continua investigación y desarrollo de los ingenieros especializados de la marca. Indudablemente, la espera valió la pena, ya que no todos los días uno se encuentra con un ventilador de 200mm y mucho menos con el nivel de calidad que conocemos de Noctua. Los NF-A20 reúnen las dos características fundamentales de un excelente ventilador – una operación casi imperceptible y un rendimiento del flujo de aire digno de alabar. El único detalle que podría causar algunos problemas de compatibilidad debido a su grosor de 30mm. Algunos gabinetes que no cuentan con mucho espacio particularmente en la parte frontal podrían no ser compatibles con los ventiladores NF-A20. Actualmente, ambos modelos de la familia NF-A20 cuestan 540 pesos mexicanos antes de impuestos, lo que nos lleva a recomendar el modelo PWM sobre el modelo FLX, ya que el primero brinda un mayor control de la velocidad. Como ya es costumbre, Noctua respalda tu compra con una amplia y generosa garantía de seis años, donde los ventiladores seguramente vivirán más que cualquier otro componente de tu sistema. Si estás buscando un ventilador de 200mm, podemos decirte con seguridad que no hay ninguna opción en el mercado que se compare con los nuevos Noctua NF-A20.
Verdict du test: "El ventilador Noctua NF-A20 es una excelente opción para el entusiasta que requiere de un ventilador de 200mm de alto rendimiento."
27.09.2017 // El Chapuzas Informático
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Noctua ha lanzado una nueva colección de productos de gama alta para el apartado de refrigeración que, como siempre, dejan a la marca en excelente lugar. Por un lado, tenemos los ventiladores Noctua NF-A12x15, una excelente alternativa para disipadores slim o chasis compactos donde no tengan cabida los tradicionales de 25 mm de grosor. Los NF-A20 son una opción para chasis que permitan los modelos de 200 mm, aunque no ofrecen una gran mejora frente a modelos de 120 mm. Mientras, los NF-A4x20 son un sustituto ideal para dispositivos ultracompactos, ya sea por reparación o para mejorar su sonoridad. Por si fuera poco, todos ellos ofrecen nada menos que 6 años de garantía, por lo que tenemos ventiladores para rato. Además, Noctua siempre busca suplir todas las necesidades de sus clientes y para ello lanza algunos accesorios como los que hemos visto, los se unen a un inmenso portafolio que podemos consultar aquí.
Verdict du test: "Como no podía ser de otra forma, desde del El Chapuzas Informático le otorgamos el Galardón de Platino a los ventiladores Noctua NF-A12x15, NF-A4x20 y NF-A20 y los nuevos accesorios, productos todos ellos de la más alta calidad. En lo que respecta al precio, en el momento de la redacción no están listados en nuestro país." (Iván Martínez, El Chapuzas Informático)
27.09.2017 // JotaReviews.pt
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Todos os modelos apresentados têm em comum os rolamentos SSO2, que tantos prémios têm vindo a dar à Noctua, graças à sua excelente qualidade. Além de ter introduzido novas ventoinhas, a Noctua anunciou também o seu controlador de FANs, sendo ele o NA-FC1. Apresentou também novos kits anti-vibração, sendo eles o NA-SAV3 e NA-SAV4.
Verdict du test: "Como aspetos positivos temos a dizer que resalta ao ouvido o ruído baixo que as ventoinhas reproduzem e a sua já falada qualidade de construção. Quanto ao controlador de ventoinhas, apesar de um pouco caro, acho muito interessante, pois este tipo de solução é muito boa para uma benchtable, pois está de fácil acesso, sendo este o seu ponto fraco, caso montem dentro de uma caixa terão de abrir a sua lateral para chegar até ele. Todos os outros acessórios, são todos eles de qualidade conhecida da Noctua." (João Teixeira, JotaReviews.pt)
27.09.2017 // ITNdaily.ru
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В этом году компания Noctua выпустила на рынок долгожданные (в основном для энтузиастов и любителей экзотических систем) вентиляторы в необычных форм-факторах. А именно 200 мм пропеллеры, компактные 120 мм модели и 40 мм вертушки. Теперь в линейке австрийского производителя есть варианты на любой вкус, а не только популярные модификации на 120, 140, 92 и 80 мм. В данном материале мы изучим шумовые характеристики и оценим мощность воздушного потока каждой новинки. Начнем с могучих двухсоток, а после познакомимся с маленькими, но крайне шустрыми 40 мм вертушками.
Verdict du test: "Но пусть вас не смущают эти цифры, даже на максимальной скорости оба вентилятора функционируют практически бесшумно (в закрытом корпусе их не услышать), при этом воздушный поток формируется крайне мощный (можно и замерзнуть, есть находиться рядом с таким устройством)." (Евгений Никифоров, ITNdaily.ru)
19.09.2017 // pcfoster.pl
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Wielu konkurentów nie daje wraz ze swoimi urządzeniami niezbędnych akcesoriów przez co jesteśmy narażeni na dodatkowe koszty. Tutaj ten problem nie występuje. Widać, że Noctua przez ponad 12 lat obecności na rynku wykonała wspaniałą pracę i udowodniła, że nawet najlepsze produkty można poprawić. Urządzenia z serii A wyróżniają się przede wszystkimi nowymi technologiami, niskim poziomem hałasu, wysokim przepływem powietrza i przede wszystkim świetnym wykonaniem. Modele A12x15 są ciche, solidne i mają tylko 15 mm grubości, za to A20 sprawdzą się w dużych obudowach, gdzie potrzebny jest duży przepływ powietrza. Małe modele A4x20 są przeznaczone głównie dla środowisk specjalistycznych, a dzięki adapterowi OmniJoin można je wszechstronnie wykorzystać.
Verdict du test: "Powyższy artykuł powinien Was tylko utwierdzić w przekonaniu, że produkty austriackiej firmy są w rzeczywistości najwyższej jakości. Każdy z nich został świetnie zaprojektowany i dostarczany jest w bogatym zestawie." (Marcin Jankowski, pcfoster.pl)
18.09.2017 // PCElite.pl
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Ceny za każdy produkt tej firmy są wysokie jednak idzie za tymi cenami jakość wykonania, przemyślana konstrukcja, solidność. Te cechy maja odzwierciedlenie wszędzie, w każdym detalu, nawet w szczegółach związanych z opakowaniem, ze sposobem zaciśnięcia termokurczek. Jedynie do czego mogę się przyczepić to kolorystyka (jedni chwalą jak ja, drudzy ganią) oraz cena.
Verdict du test: "Długo myślałem nad podsumowaniem jednak opiszę to krótko – Noctua to Noctua. Dobrze wydane pieniądze." (Arkadiusz Byś, PCElite.pl)
11.09.2017 // Tecnogeekies.com
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Hoy hemos presenciado como Noctua lo ha vuelto a hacer, las prestaciones de sus nuevos productos continúan siendo la referencia que siempre han sido, pero hay otras cosas que también van a continuar. Frente a las grandes prestaciones tradicionales de Noctua hay otro aspecto que también se mantiene, este nivel de calidad no es barato, desde los 30€ que cuesta el ventilador de 200mm, el NF-A20. El adaptador SATA por 8€, el controlador por 20€ o los sorprendentes 15€ que cuesta el pequeño ventilador de 40mm, pasando por los más razonables 20€ por el ventilador más tradicional de 120mm. No obstante hemos de hacer hincapié en algo que solemos decir en Tecnogeekies bastante a menudo, aunque 20€ pueden parecer muchos, especialmente solo por un ventilador, su calidad y su durabilidad nos hacen recomendar esta marca siempre que vuestro presupuesto os lo permita.
Verdict du test: "La calidad tiene un precio, pero en casos como el de Noctua merece la pena." (Ignacio Merino, Tecnogeekies.com)
10.09.2017 // CoolingTechnique.com
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+ Ottima qualità costruttiva
+ Materiali di primordine
+ Ampia dotazione di accessori
+ bassissimi consumi
+ Motore basato su cuscinetto SSO2
+ Vibrazioni ridotte al minimo sindacale
+ Coperchio di rinforzo per diminuzione vibrazioni
+ Masse sospese ottimizzate (NF-A20)
+ ottimo rapporto CFM/RPM e CFM/Db(A)(NF-A12x15)
+ Tecnologicamente avanzate sia sul piano elettrico che fluidodinamico (vedesi articolo)
Verdict du test: "I prezzi sono quelli di sempre ovvero alti in pieno stile Noctua, la qualità si paga ed al solito il brand austriaco non fa sconti a nessuno; le A20 arrivano all'importante cifra di 29.90€ cad. e su questa cifra di 200mm ne trovate davvero tante anche a metà prezzo e con emissioni acustiche similari poichè le ventole appartenenti a questa categoria sono tutte a bassi RPM, certo non avrete l'SSO2, l'AAO frame e tante piccole chicche ma si può risparmiare facilmente qualche decina di euro, ovvio non saranno delle Noctua!" (Damiano Villa, CoolingTechnique.com)

Instructions de montage (PDF)

Feuille d'informations (PDF)

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

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

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 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.

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.

Which cases does the NF-A20 fit?

Please refer to our case compatibility list for detailed compatibility information.

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