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Le NF-A14 est un ventilateur haut de gamme silencieux au format 140mm avec un cadre carré répondant à la norme AAO (Advanced Acoustic Optimisation) de Noctua. Sa forme carrée et les orifices de fixation au format 140mm (soit un espacement de 124,5mm) en font le compagnon idéal des radiateurs pour watercooling ou des boîtiers prévus pour une ventilation au format 140mm. Bénéficiant des dernières avancées technologiques dans le domaine de l’aérodynamisme, dont les Flow Acceleration Channels, le NF-A14 repousse encore plus loin les performances de refroidissement qui ont fait la renommée du célèbre NF-P14. La version FLX offre, via l’utilisation de l’adaptateur faible bruit (L.N.A.) fourni, des réglages de vitesse de 1200/1050 ou 900rpm permettant ainsi d’obtenir un réglage flexible et précis en vue d’une performance élevée ou d’un fonctionnement quasiment inaudible. Sa discrétion étonnante, la présence des roulements de référence SSO2 et le niveau de qualité extrême garanti par Noctua font du NF-A14 le ventilateur idéal pour les plus exigeants.
Détails
Digne successeur du célèbre NF-P14

Digne successeur du célèbre NF-P14

Le ventilateur NF-P14 de Noctua est devenu la référence incontournable dans le monde du PC pour tous les passionnés recherchant les meilleurs ventilateurs silencieux au format 1400mm. Grâce aux nombreuses optimisations aérodynamiques successives, les NF-A14 offrent à présent une pression statique accrue et un ratio flux d'air/bruit encore meilleur que leur prédécesseur.
Cadre carré 140mm

Cadre carré 140mm

Le cadre carré 140mm du NF-A14 est pourvu d'orifices de montage 140mm (espacement de 124,5mm) qui lui permettent d' équiper avantageusement les boîtiers classiques au format140mm ou bien les ventirads de watercooling. Dans de telles applications, sa forme carrée offrira une occupation d'espace optimisée et une pression maximale.
Canalisateurs de flux (Flow Acceleration Channels)

Canalisateurs de flux (Flow Acceleration Channels)

La turbine des NF-A14 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.
Roulement SSO2

Roulement SSO2

Les NF-A14 se voient dotés 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.
Coussinets en métal

Coussinets en métal

En vue d'assurer une qualité optimale de fabrication, une bonne longévité et stabilité, les NF-A14 sont dotés d'un roulement CNC entièrement usiné en laiton.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

La toute dernière mouture du système SCD de Noctua garantit un fonctionnement tout en douceur grâce à l'élimination des variations de couple et des bruits de commutations. Par conséquent, les NF-A14 restent très discrets même à proximité.
Réglage à 3 vitesses pour une flexibilité totale

Réglage à 3 vitesses pour une flexibilité totale

Donnant accès à des réglages de vitesse de 1200, 1050 et 900 rpm grâce aux adaptateurs fournis (faible bruit et ultra faible bruit), les NF-A14 FLX (FLX pour Flexibilité) offrent une grande souplesse de réglages en termes de flux d'air et de silence.
Nombreuses options de câblage

Nombreuses options de câblage

Si le câble principal d'alimentation du ventilateur est court (20 cm) afin de limiter l'encombrement dans les utilisations traditionnelles, celui de 30cm est fourni pour résoudre les problèmes éventuels de distance. Les deux câbles sont entièrement gainés.
Consommation d'énergie ultra-faible

Consommation d'énergie ultra-faible

Les NF-A14 consomment seulement 0,96W ce qui représente une réduction de consommation de plus de 20% comparée au modèle précédent. Au-delà de l'intérêt écologique, l'impact est aussi réel sur votre facture d'électricité !
Garantie Fabricant de 6 ans

Garantie Fabricant de 6 ans

La réputation des ventilateurs Noctua n'est plus à faire tant pour leur qualité que pour leur étonnante longévité. Comme pour tous les modèles Noctua, les NF-A14 bénéficient d'un MTTF de plus de 150 000 heures de tests et bénéficie d'une garantie totale fabricant de 6 ans.
NF-A14 FLX
Spécifications ventilateur
Dimensions
140x140x25 mm
Espacement des orifices de fixation
124,5x124,5 mm
Branchement
3 broches
Type roulements
Géométrie des pales
Série A avec canalisateurs de flux
Vitesse de rotation (+/-10%)
1200 RPM
Vitesse de rotation avec L.N.A. (+/-10%)
1050 RPM
Vitesse de rotation avec U.L.N.A. (+/-10%)
900 RPM
Niveau sonore
19,2 dB(A)
Pression statique
1,51 mm H₂O
Pression statique avec L.N.A.
1,18 mm H₂O
Pression statique avec U.L.N.A.
0,89 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.)
  • Adaptateur Ultra Faible Bruit (U. L.N.A.)
  • Adaptateur 3 broches / 4 broches
  • Extension 30cm
  • 4 Vibration-Compensators
  • 4 vis de fixation
Garantie
6 ans
NF-A14 FLX
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.
language
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21.01.2017 // BestVPN.com
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NF-A14 FLX test

I liked:
  • Extremely well-designed products
  • Great support and instruction
  • Fantastic value for money
I wasn’t so sure about:
  • Nothing
I hated:
  • Nothing
Verdict du test: "On the whole, my experience with Noctua has been fantastic." (Peter Selmeczy, BestVPN.com)
19.08.2015 // Overclockers.ru
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NF-A14 FLX test

Две модели Noctua серии NF-A14 демонстрируют отличные результаты. Оба вентилятора неплохо «дуют» уже при 25 дБ. Пожалуй, именно их можно назвать лучшими «корпусными» моделями в подборке.
Verdict du test: "Подведем итоги сравнения 140 мм моделей. Звание лучшего корпусного вентилятора, пусть здесь и развернулась серьезная борьба, следует отдать Noctua NF-A14 FLX." (Константин Назаров, Overclockers.ru)
21.07.2015 // hardwareinside.de
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NF-A14 FLX test

Schon bei der Verpackung macht Noctua seinem guten Namen alle Ehre und liefert den NF-A14 in einem wertigen Karton mit aufklappbarem Info-Deckel auf Vorder- und Rückseite. Zusätzlich wird der Inhalt durch eine doppelte transparente Blister-Schale geschützt. Die 7 Lüfterklingen im klassischen Noctua-Braun sitzen in einem hellbraunen Rahmen und das Ganze wird über ein Kabel in sehr wertigem schwarzen Sleeve mit Strom versorgt. Außerdem sind alle 8 Ecken mit abnehmbaren Gummi-Schützern entkoppelt. Beim Zubehör tut sich der Noctua-Lüfter besonders hervor. Neben 4 passend braunen Gummi-Mounts und 4 unlackierten Lüfterschrauben gibt es ein Verlängerungskabel, einen Adapter für Netzteil-Anschlüsse und zwei Drossel-Adapter. Alles selbstverständlich im selben hochwertigen Sleeve, wie das Lüfterkabel selbst. Da kommt keiner der getesteten Konkurrenten heran.
Verdict du test: "Mit dem NF-A14 liefert Noctua einen durch sein Zubehör sehr vielseitigen Lüfter, der in allen Stufen gut dasteht. In allen Szenarien sind die drei Punkte dieses Lüfter im Diagramm weit rechts unten zu finden und dementsprechend gut ist es um seine Effizienz bestellt. Neben dem Thermaltake Riing bietet er in diesem Test das beste Verhältnis von Lautstärke und Luftdurchsatz." (Florian Weichselbaum, hardwareinside.de)
27.02.2015 // PC Games Hardware 04/15
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NF-A14 FLX test

Noctuas NF-A14 FLX findet sich seit Langem unter den Top 3 im PCGH Einkaufsführer. Der ungewöhnlich gefärbte Lüfter zeigt seinen Premium- Anspruch nicht nur beim fürstlichen Preis und der aufwendigen Verpackung, deren Grundfläche bequem für ein 180-mm-Modell gereicht hätte. Auch das umfangreiche Zubehör und die lange Liste von technischen Innovationen vermitteln einen Oberklasse-Eindruck.
Verdict du test: "Im Einsatz überzeugt Noctua durch eine geringe Lautstärke und eine angemessenen Kühlleistung, vor allem aber durch das eindeutig leiseste Lager im Test. Egal wie weit wir den Lüfter, unter Nutzung einer Lüftersteuerung mit Start-Boost, drosselten: Auch bei minimaler Luftbewegung können wir keine Nebengeräusche heraushören." (Torsten Vogel, PC Games Hardware 04/15)
09.02.2015 // QWERTYmag.it
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NF-A14 FLX test

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.
Verdict du test: "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-A14 FLX test

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.
Verdict du test: "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-A14 FLX test

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.
Verdict du test: "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-A14 FLX test

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.
Verdict du test: "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)
20.03.2014 // Ayumilove PC
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NF-A14 FLX test

It pushes a lot of air similar to its predecessor NF-P14 while maintaining very low noise. When placed in open space without any grills/resistance, there isn’t much noise to be heard. It’s so quiet that you do not need to chain with U.L.N.A or L.N.A. to reduce its speed. Most fans spinning above 1000RPM makes a lot of noise but this one is completely silent at 20cm distance. Noise: Quieter compared to NF-P14 while maintaining same performance when placed in between 2 tower radiators such as Noctua NH-D14. NF-P14 generated 47 db(A) whereas NF-A14 FLX generated 42 db(A) at 10 cm distance from my sound meter while they are sandwiched in between a NH-D14 Tower CPU Heatsink. This method basically tests both push and pull of the fan’s capability.
Verdict du test: "Noctua fans are highly recommended as its able to deliver high performance airflow and low noise while consuming very little electricity. Backed with a 6 years warranty, its a no brainer to purchase this fan for your case." (Chan Chee Gene, Ayumilove PC)
08.12.2013 // infoBIT.pl
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NF-A14 FLX test

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.
Verdict du test: "Nie jest to zatem sprzęt dla każdego, bo nie wszyscy wymagają tak wiele, jednak myślę, że zasługuje na moją rekomendację." (Wojtek Braś, infoBIT.pl)

Instructions de montage (PDF)

Feuille d'informations (PDF)

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

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

PWM PWM

Can I use Noctua fans in my system from Acer, Apple, Dell, HP, Lenovo or other major brands?

Noctua 12V fans comply with the established specifications for standard PC systems issued by Intel and AMD. Systems from Acer, Apple, Dell, HP, Lenovo or other major brands often deviate from these specifications e.g. by using proprietary fan headers, custom pin-alignments or pin-configurations, different methods of fan speed control, etc. This can lead to compatibility issues when using Noctua fans in systems from said brands. Some of these problems can be avoided with some technical knowledge, but especially BIOS related issues (e.g. errors or shutdowns due to low fan speed) can often not be resolved. As a result, Noctua does not officially support systems from Acer, Apple, Dell, HP, Lenovo or other major brands.

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

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

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

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

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

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.

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 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

What pin configuration do Noctua 12V fans use?

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

pin configuration

Can I 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 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 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.

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.

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.

My Noctua 3-pin fan starts to spin when the PC boots but then stops, what is wrong?

Many mainboards are able to automatically regulate the fan speed of 3-pin fan via voltage based measures. However, due to limitations of this method it may occur that the mainboard reduces the voltage so much that the fan stops. 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.

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.

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