heading

Bénéficiant d’un design aérodynamique avancé, le NF-A6x25 est un ventilateur silencieux haut de gamme hautement optimisé au format 60x25mm et notamment doté des Flow Acceleration Channels et du cadre Noctua AAO. La version PWM est équipée du circuit exclusif Noctua NE-FD1 IC qui permet un pilotage automatique complet de la vitesse via les connecteurs pour ventilation 4-broches ; un adaptateur faible bruit est par ailleurs fourni afin de plafonner la vitesse maximale (de 3000 à 2100 tr./min.) durant les phases PWM. Ce ventilateur silencieux et discret est pourvu du roulement SSO2, bénéficie de la qualité de fabrication reconnue des produits Noctua et constitue ainsi une solution de choix pour les plus exigeants.

Détails
Moyeux de taille réduite

Moyeux de taille réduite

Grâce à une conception plus profilée et compacte du moteur, le moyeu du NF-A6x25 est de taille plus réduite comparée à celle des ventilateurs 6cm traditionnels. En augmentant de fait la surface des pales, le NF-A6x25 améliore significativement le niveau de pression ainsi que le flux.
Canalisateurs de flux (Flow Acceleration Channels)

Canalisateurs de flux (Flow Acceleration Channels)

La turbine du NF-A6x25 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-vibrations intégrés

Silentblocs anti-vibrations intégrés

Les silentblocs anti-vibrations intégrés, fabriqués à partir de silicone extra-souple, permettent de limiter la transmission des vibrations minute tout en assurant une parfaite compatibilité avec les vis et systèmes de fixations standards.
Roulement SSO2

Roulement SSO2

Le NF-A6x25 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.
Système exclusif PWM IC avec SCD

Système exclusif PWM IC avec SCD

Compatible avec les systèmes de contrôle de vitesse automatisé PWM, les NF-A6x25 PWM 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.
PWM à 0%: arrêt

PWM à 0%: arrêt

Lorsque le ventilateur est réglé sur un rapport de cycle PWM de 0%, que ce soit via la carte mère ou un contrôleur de ventilation PWM, il s’arrête. Ceci permet de créer des configurations avec un refroidissement semi passif qui permet l’arrêt automatique des ventilateurs – pour assurer ainsi un fonctionnement totalement silencieux – en fonction des sollicitations et des niveaux de température.
Adaptateur Faible Bruit

Adaptateur Faible Bruit

Les NF-A6x25 PWM sont livrés avec un adaptateur faible bruit (L.N.A. pour Low Noise Adaptator) qui fait chuter la vitesse maximale de 3000 à 2100rpm. Le L.N.A. convient aussi bien pour un fonctionnement à vitesse fixe (2100rpm) 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 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-A6x25 affiche un MTTF de plus de 150 000 heures de test et se voit assorti d'une garantie constructeur de 6 ans.
NF-A6x25 PWM
Spécifications ventilateur
Dimensions
60x60x25 mm
Espacement des orifices de fixation
50x50 mm
Longueur du câble
20cm + rallonge 30cm NA-EC1
Type roulements
Géométrie des pales
Série A avec canalisateurs de flux
Vitesse de rotation (+/-10%)
3000 RPM
Vitesse de rotation avec L.N.A. (+/-10%)
2300 RPM
Vitesse de rotation min. (PWM, +/-20%)
550 RPM
Niveau sonore
19,3 dB(A)
Niveau sonore avec L.N.A.
13,7 dB(A)
Pression statique
2,18 mm H₂O
Pression statique avec L.N.A.
1,29 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
  • 4 Vibration-Compensators
  • 4 vis de fixation
NF-A6x25 PWM
08.11.2015 // AndroidPC.es
test.gif

NF-A6x25 PWM test

Después de probar los modelos NF-A6x25 PWM, NF-A6x25 FLX, NF-A4x10 FLX y NF-A4x10 5V nos dan ganas de dejar un ventilador en nuestras placas pasivas, pero preferimos no hacerlo, como ya sabéis nos gustan los sistemas pasivos. Ciertamente es estos productos pueden ofrecen una mejora térmica en nuestros dispositivos si vamos a exprimirlos y además no nos molestan con ruidos. Si tenemos algún modelo pasivo con problemas térmicos añadirle un pequeño ventilador bien dimensionado siempre es una solución, sobretodo si tienen la calidad de estos modelos.
Verdict du test: "Los recomendamos sin ninguna duda para quien quiera mejorar el rendimiento de su miniPC o AndroidPC con problemas térmicos." (Joaquin Prida Trujillo, AndroidPC.es)
15.04.2015 // ByTheWay.gr
test.gif

NF-A6x25 PWM test

Κλείνοντας,οι επιδόσεις του νέου NF-A6x25 PWM είναι εξαιρετικές. Καταφέρνει να έχει σπουδαίες επιδόσεις και εξαιρετικά επίπεδα θορύβου με τον low noise adapter που προσφέρει η εταιρία. Set it and forget it προσέγγιση και μπορούμε να εγγυηθούμε το "forget it" κομμάτι. Η επιμονή στην λεπτομέρεια της Noctua είναι προφανής. Μερικές από τις αναφερόμενες τεχνολογίες θυμίζουν μελέτες αεροδυναμιστών παρά κατασκευαστών computer parts και η παρεχόμενη εγγύηση των 6 ετών είναι χωρίς προηγούμενο σε μια αγορά που η 3ετής πλέον θεωρείται πολυτέλεια. Σκεφτείτε το, το 2020 οι ανεμιστήρες σας θα είναι ακόμα εντός εγγύησης και μάλιστα από μια εταιρία που συνηθίζει να την τιμά, χωρίς αστείες δικαιολογίες.
Verdict du test: "Η Noctua δείχνει ότι δεν αγχώνεται να διώξει το premium χαρακτήρα της ούτε από την τιμολογιακή της πολιτική, και ειλικρινά δεν περιμέναμε κάτι διαφορετικό εκεί. Όμως, αυτό που έχουμε να παρατηρήσουμε είναι η κορυφαία ποιότητα κατασκευής σε συνδυασμό με τον εξαιρετικό σχεδιασμό που επιφέρουν καλύτερες επιδόσεις, ενώ ταυτόχρονα μπορούν και προσφέρουν ήσυχη και απρόσκοπτη λειτουργία ακόμα και σε πολύωρη χρήση." (Nasioulis Evangelos, ByTheWay.gr)

NA-FC1

  • Contrôleur de vitesse compact, ultra flexible pour ventilateurs PWM 4 broches
NF-A6x25 PWM

NA-SAC5

  • Adaptateur pour alimentation de ventilateur S-ATA vers 4 broches
NF-A6x25 PWM

NA-SEC1

  • Câbles-rallonges 4-broches
NF-A6x25 PWM

NA-SAV2

  • Attaches de fixation anti-vibration
NF-A6x25 PWM

L'achat est possible via nos partenaires commerciaux locaux ou directement sur nos boutiques en ligne officielles Amazon et eBay :



En tant que Partenaire Amazon, nous réalisons un bénéfice sur les achats remplissant les conditions requises.

eBay.com
eBay.de

Instructions de montage (PDF)

Feuille d'informations (PDF)

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 600 or 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 in the BIOS 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, by using 3rd party tools like IPMItool or IPMIutil, or by requesting a modified BIOS file from Supermicro, which takes the minimum fan speed of Noctua fans into account (charges might apply). Please note that any modifications performed with 3rd party tools are done at your own risk and that Noctua can not be held responsible for any possible issues.

Where can I find a technical documentation and specifications of the PWM speed control system of Noctua’s fans?

While using PWM (Pulse Width Modulation) based fan speed control in PC environments is usually straightforward and does not require any background knowledge, it can be vital when it comes to controlling fans via PWM in other environments. Please refer to our specification white paper for a detailed technical documentation of the PWM speed control features of Noctua’s 4-pin PWM fans. Detailing aspects such as connector types, pin configuration or RPM speed signal output as well as signal specifications and circuit design questions, it enables engineers to implement PWM based speed control for Noctua fans in custom circuit designs and applications.

How much torque should be used for fan screws?

Please use 0.6Nm to tighten fan screws. Make sure not to overtighten the screws as this may damage the fan frame.

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.

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 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

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.

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 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).

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

Noctua fans such as the 40, 60, 80, 92 or 120mm 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 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 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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