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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 PWM bénéficie du circuit propriétaire NE-FD1 IC de Noctua qui permet un contrôle totalement automatisé de la vitesse via les connecteurs de ventilateurs 4-broches. L’adaptateur faible bruit (LNA) fourni permet par ailleurs, en mode PWM, de plafonner la vitesse à 1200rpm. Les performances du NF-A14 PWM, dont sa vitesse de rotation (pouvant atteindre 1500 tr/min.), associées à ses options complètes de régulation de vitesse font de ce ventilateur le choix incontournable des utilisateurs en quête permanente de l’équilibre parfait entre capacités de refroidissement et silence, aussi bien en configuration watercooling que dans le cadre d’une utilisation sur ventirad ou au sein d’un boîtier.
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.
Système exclusif PWM IC avec SCD

Système exclusif PWM IC avec SCD

Compatible avec les systèmes de contrôle de vitesse automatisé PWM, les NF-A14 sont pourvus 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-A14 sont livrés avec un adaptateur faible bruit (L.N.A. pour Low Noise Adaptator) qui fait chuter la vitesse maximale de 1500 à 1200rpm. Le L.N.A. convient aussi bien pour un fonctionnement à vitesse fixe (1200rpm) 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.
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 PWM
Spécifications ventilateur
Dimensions
140x140x25 mm
Espacement des orifices de fixation
124,5x124,5 mm
Branchement
4-Pin PWM
Type roulements
Géométrie des pales
Série A avec canalisateurs de flux
Vitesse de rotation (+/-10%)
1500 RPM
Vitesse de rotation avec L.N.A. (+/-10%)
1200 RPM
Vitesse de rotation min. (PWM, +/-20%)
300 RPM
Niveau sonore
24,6 dB(A)
Pression statique
2,08 mm H₂O
Pression statique avec L.N.A.
1,51 mm H₂O
Puissance consommée max.
1,56 W
Ampérage max.
0,13 A
Tension
12 V
MTTF
> 150.000 h
Volume de livraison
  • Adaptateur Faible Bruit (L.N.A.)
  • Câble en Y (4-pin)
  • Extension 30cm
  • 4 Vibration-Compensators
  • 4 vis de fixation
Garantie
6 ans
NF-A14 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.
language
language
19.06.2017 // TechUniverse.it
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NF-A14 PWM test

La Noctua NF-A14 PWM è una ventola premium di altissima qualità e ad alte prestazioni, e fin qui, credo proprio che nessuno possa affermare il contrario. Viene offerta in vendita ad un ottimo prezzo davvero molto interessante tenendo conto della sua qualità e del corredo di accessori. I livelli sonori massimi dichiarati da casa Noctua di questa ventola sono di 24,6 dBA. Secondo i miei “gusti”, fino a 35 dBA una ventola è estremamente silenziosa, intorno ai 25 dBA come per questa ventola, siamo a livelli sonori praticamente appena percettibili. I livelli di Airflow e di pressione statica sono davvero ottimi, un ottimo prodotto che viene venduto con una dichiarazione di aspettativa di vita della ventola di ben 150.000 ore (MTBF). Un prodotto che viene offerto anche con ben 6 anni di garanzia, non vedo che cosa si possa pretendere di più da una ventola da 140mm ad alte prestazioni e di altissima qualità come questa.
Verdict du test: "Se cercate il “Top” tra le ventole da 140mm, la Noctua NF-A14 PWM è proprio quella che state cercando, inoltre, può essere utilizzata per sostituire la ventola di un dispositivo di raffreddamento a liquido per processori aumentandone ancor di più le prestazioni di raffreddamento. Davvero consigliata, è il TOP." (TechUniverse.it)
12.06.2017 // PC nadšenci
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NF-A14 PWM test

Testy nám potvrdzujú kvalitu ventilátorov Noctua, no príjemne prekvapilo aj SilentiumPC, hlavne model Sigma Pro 120 PWM. Sklamaním sú ale ventilátory Reeven, ktoré sú drahšie ako SilentiumPC, no v testoch dosiahli horšie výsledky.
Verdict du test: "Ak hľadáte kvalitný a tichý ventilátor, Noctua je ten správny výrobca. Vo všetkých testoch ventilátory tohto výrobcu preukázali najlepšie teploty a najmenšiu hlučnosť, preto im udeľujeme zlaté ocenenie." (Tomáš Brestovanský, PC nadšenci)
31.08.2015 // SpazioiTech.it
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NF-A14 PWM test

Il montaggio delle ventole avviene in un batter d’occhio anche se non lo si è mai fatto ed è agevolato dalla presenza di cavi di prolunga o sdoppiamento. Queste due soluzioni sono davvero silenziose, a case chiuso la loro presenza resta un vero e proprio mistero!
Verdict du test: "Consiglio caldamente, o sarebbe il caso di dire freddamente (ora potete anche compatirmi per la battuta, NdR), questi due compagni delle estati italiane." (Andrea Giorgio, SpazioiTech.it)
09.02.2015 // QWERTYmag.it
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NF-A14 PWM 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 PWM 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 PWM 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)
01.06.2014 // Dark Tech Reviews
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NF-A14 PWM test

تم تجربة المراوح باستخدام كل محول مرفق لتغيير السرعات تم تثبيت درجة حرارة الغرفة على درجة 29 درجة الحرارة التي تم تسجيلها في الخمول بعد وضع الجهاز على سطح المكتب دون تشغيل برامج وتركة لمدة 15 دقيقة أما فى حالة الضغط تم الضغط بأستخدام برنامج OCCT علي المعالج المستخدم PHENOM II X2 555Be @3.7 وباستخدام فولتية مقدارها 1.5v المشتت المستخدم هو CNPS10X بعد قراءتك لنتائج الاختبارات لا تنسى قراء التعليق الختامي لتجد الملاحظات الخاصة بالأداء أيضاً ستجد معدل الدوران الفعلى أثناء الأختبارات موضح لكل مروحة
Verdict du test: "لن أطيل عليكم هذه تعتبر ثاني مراجعة لنا مع مراوح شركة Noctua والتي أثبت شيئاً واحداً أن الجودة والأداء والأزعاج أحد اهم عوامل نجاح الشركة فمراوح NF-A14 PWM ظهرت قوتها في برنامج الأختبار صوت المراوح لا يُذكر علي سرعة 1500 ومع سرعة 1200 لن تسمع صوت لها تفوقت علي كافة مراوح ذات القياس 120 مم" (Ahmed Mohamed, Dark Tech Reviews)
01.05.2014 // Conseil Config
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NF-A14 PWM 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)
28.11.2013 // PCElite.pl
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NF-A14 PWM test

Wentylator jest potwornie mocny. Pod tym względem uplasował się na drugiej pozycji w teście. Osiągnął wynik 39 na 40 możliwych w teście wydajności. Łożyska nic nie słychać. Wentylator trzyma klasę. Piaskowy kolor świetnie do niego pasuje.
Verdict du test: "Noctua NF-A14 PWM jest wentylatorem bezkonkurencyjnym, jeśli chodzi o stosunek poziomu dźwięku do wydajności, oraz wydajności do poziomu pobory prądu." (Arkadiusz Byś, PCElite.pl)
25.11.2013 // PCAXE.com
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NF-A14 PWM test

Na prvi pogled ne vidimo ništa specijalno, ali ako iz dobijenih temperatura jezgra izračunamo proseke, stvari će biti jasnije. Kuler sa ventilatorom koji je radio na 1200 obrtaja je ostvario maksimalnu temperaturu od 83,5°C. Kada je hladnjak bio opremljen sa bržim ventilatorom na 1500 obrtaja, maksimalna zabeležena temperatura je bila 80,5°C. Dakle, cela tri stepena, što je primetna razlika u oku entuzijasta. Sad Vam je valjda jasnije zašto je NH-D14 izgubio od NH-14S. Zato što tih 'par obrtaja viška' znače puno za konačan rezultat.
Verdict du test: "PWM verzija od ovog 140mm ventilatora će naravno dobiti tradicionalnu 'PCAXE Diamond' nagradu. Noctua-u ne vredi da hvalimo išta posebno, oni koji razumeju njihovu ideologiju, namenu i kvalitet, oni će prihvatiti ovaj proizvod kao i svaki drugi od Noctua-e." (Atila Gobor, PCAXE.com)

Instructions de montage (PDF)

Feuille d'informations (PDF)

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

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

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

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

Can I disassemble my fan for cleaning (or other purposes, e.g. painting)?

In order to ensure flawless operation over many years of usage, all Noctua fans come with a premium grade SSO bearing, which is fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

It is thus recommended to clean your fans using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please don’t use a vacuum cleaner as this may apply excessive force to the fan.

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

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

Can I run 4-pin PWM fans on 3-pin fan headers?

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

What pin configuration do Noctua 12V fans use?

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

pin configuration

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

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

P14

How should I clean my Noctua fan?

Fans inside computer cases tend to accumulate dust over longer periods of usage. In order to maintain maximum performance, please clean your fans regularly using a duster, slightly moist tissue or canned air. Please be careful not to use too much force in order to prevent any damage to the fan. Please do not use a vacuum cleaner as this may apply excessive force to the fan and do not put the fan under running water as water residues inside the motor may lead to short circuits.
In order to ensure flawless operation over many years of usage, Noctua’s premium grade SSO bearings are fully sealed to prevent the entering of fine dust particles. Please note that the fan is not designed to be taken apart by the user. Removing the impeller from the frame will break the sealing of the bearing and results in a loss of warranty.

Can 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

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.

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

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

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

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

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

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

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

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

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

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

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

4 pin fan header types

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

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

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



To resolve the issue, you can:

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

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

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

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

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

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

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

    4 pin fan header types

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

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

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


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

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

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

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

Which Noctua fan or CPU cooler should I buy? How to choose the right model?

Not sure which Noctua product to buy? Our detailed buying guides for fans and CPU coolers help you to choose the model that works best for you.

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