heading

Product discontinued. Successor model: NF-A9 PWM

Product discontinued.

The classic NF-B9 92mm fan helped to found Noctua’s reputation as a top-tier manufacturer of premium quality quiet cooling components and still impresses users with its exquisite quietness and superb performance. The new PWM version features Noctua’s novel, custom designed PWM IC for fully automatic control and ultra-low power consumption. Equipped with Noctua’s signature SSO-Bearing and topped off with a 6 years manufacturer’s warranty, the NF-B9 PWM is a proven premium choice for the highest demands.
Details
Proven NF-B9 Design

Proven NF-B9 Design

Tens of thousands of quiet cooling enthusiasts swear by Noctua's classic NF-B9. Its impressive quietness, excellent performance and impeccable, time-tested quality made the B9 a default choice for 92mm quiet cooling.
Bevelled Blade Tips

Bevelled Blade Tips

Reducing critical rotor stator interaction, the NF-B9's Bevelled Blade Tips permit to combine a higher blade surface area with quieter operation and thus form a cornerstone of the fan's outstanding efficiency.
Vortex-Control Notches

Vortex-Control Notches

Noctua's signature Vortex-Control Notches split up trailing edge vortices and thus spread the fan's noise emission over a wider range of frequencies. This measure makes the NF-B9 PWM sound more pleasant to the human ear.
Custom-designed PWM IC with SCD

Custom-designed PWM IC with SCD

Supporting fully automatic PWM speed control, the NF-F12 uses Noctua's novel, custom-designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses, SCD suppresses PWM switching noises and thus makes the fan quieter at lower speeds.
Low-Noise Adaptor

Low-Noise Adaptor

The NF-B9 PWM is supplied with a (L.N.A.) that reduces the maximum fan speed from 1600 to 1300rpm. The L.N.A. can be used either to run the fan at a fixed speed of 1300rpm or to cap the maximum speed when using automatic PWM control.
Extensive cabling options

Extensive cabling options

The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second NF-B9 fan to the same PWM fan header for automatic control.
SSO-Bearing

SSO-Bearing

Combining the proven concept of hydrodynamic bearing with an additional magnet that supports the self-stabilisation of the rotor axis, Noctua's time-tested technology has become synonymous with supremely quiet operation and exceptional long-term stability.
6-year manufacturer’s warranty

6-year manufacturer’s warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-B9 PWM features an MTBF rating of more than 150.000 hours and comes with a full 6-year manufacturer's warranty.
NF-B9 PWM
FAN Specification
Size
92x92x25
Connector
4-Pin PWM
Bearing
Blade Geometry
Rotational Speed (+/- 10%)
1600
Rotational Speed with L.N.A. (+/- 10%)
1300
Min. Rotational Speed (PWM, +/-20%)
300
Airflow
64,3
Airflow with L.N.A.
52,6
Acoustical Noise
17,6
Acoustical Noise with L.N.A.
13,1
Static Pressure
1,61
Static Pressure with L.N.A.
1,09
Max. Input Power
0,96
Max. Input Current
0,08
Voltage
12
MTBF
> 150.000
Scope of Delivery
  • Low-Noise Adapter (L.N.A.)
  • 4-Pin Y-Cable
  • 30cm Extension Cable
  • 4 Vibration-Compensators
  • 4 Fan Screws
Warranty
6 years
NF-B9 PWM
20.02.2012 // TodoHTPC.com
test.gif

NF-B9 PWM Review

Yo diría que es casi imposible equivocarte al comprarte un equipo de Noctua. Y con el NF-B9 PWM se vuelve a comprobar que Noctua sigue en lo mas alto de la disipación por aire. El NF-B9 incorpora las últimas tecnología desarrolladas por Noctua, todas ellas orientadas a maximizar el rendimiento y minimizar el ruido. La última de ellas es el controlador PWM NE-FD1, que permite reducir el nivel sonoro y optimizar el consumo. Esta es la principal diferencia con respecto a su predecesor NF-B9. Noctua ha incorporado todo tipo de adaptadores y tornillos necesarios para la instalación del ventilador. Incluso un pequeño manual nos explicará como colocar el ventilador Una vez instalado el resultado no puede ser mejor, es casi imposible escuchar el ventilador. En nuestro caso consigue mantener perfectamente refrigerado un equipo completo. El precio es quizás lo único que puede echarnos atrás, ronda los 20 Euros. Es un precio alto si lo comparamos con otros ventiladores, pero el silencio y la disipación que ofrece son difíciles de obtener.
Test verdict: "En resumen, si necesitamos un ventilador de caja de 92mm el NF-B9 PWM es casi con total seguridad el mejor ventilador. Gracias a la tecnología de Noctua, es difícil escucharlo y la refrigeración es fantástica. Desde TodoHTPC ha obtenido nuestro sello de producto recomendado." (Abel Hernández Valero, TodoHTPC.com)
02.01.2012 // Freemodding.it
test.gif

NF-B9 PWM Review

Risparmiare poco più di mezzo watt può sembrare una finezza da smanettoni, ma sul piano ingegneristico si tratta di un risultato formidabile. Se aggiungiamo che tutto questo non incide minimamente sulle prestazioni termiche e che ora possiamo affidarne il controllo alla nostra scheda madre in totale tranquillità, sfruttando il grandissimo range che parte da soli 300 giri al minuto, non si può che essere davvero soddisfatti di questo ulteriore step qualitativo effettuato da Noctua.
Test verdict: "Il risultato è eccellente: se già apprezzavate la qualità e la silenziosità delle ventole Noctua, non rimarrete certo delusi dalla nuova serie PWM. Silenziose, performanti e parsimoniose sul piano energetico." (Enrico Maria Sampietro, Freemodding.it)
31.12.2011 // Hardware - HDblog
test.gif

NF-B9 PWM Review

Anche in questo caso ci troviamo davanti ad una ventola efficace e capace di dissipare il calore molto velocemente grazie alle pale di dimensioni importanti (pur essendo un modello da 92 mm). Le viti in silicone sono molto utili se si utilizza la fan su un lato del case, senza quindi aver bisogno di cacciaviti; basterà in pratica mettere una “vite” sul case e tirarlo finchè non si inserisce completamente la ventola. Ovviamente la vite in silicone serve soprattutto a smorzare le vibrazioni.
Test verdict: "Come da tradizione le ventole Noctua si confermano ottimi prodotti, sia sotto il profilo delle performance che della qualità. Il ricco catalogo del produttore Austriaco si arricchisce con nuove proposte che, anche senza introdurre novità eclatanti, offrono ora la 'comodità' della tecnologia PWM; non bisogna dimenticare infatti che i prodotti in esame erano già disponibili nella versione standard con connettore a 3 pin." (Michele Bruno, Hardware - HDblog)
27.01.2013 // ElektronikTest.dk
test.gif

NF-B9 PWM Review

Så blev de montere og testet med bundkortets PWN styriign og det forløb uden problemer, jeg har ikke kunnet høre noget støj fra dem selvom de køre på fuld blæs.
Test verdict: "Nu har jeg haft et par forskellige Noctua produkter i mellem hænderne og de har alle sammen gjort det rigtig godt. Deres kvalitet samt udvikling er noget af det jeg bider mærke i, her har de en stor fordel i at de ikke laver så mange nye produkter men i stedet optimerer og gør tingene bedre." (John Thorn, ElektronikTest.dk)
02.09.2012 // rbmods.com
test.gif

NF-B9 PWM Review

We plugged in the case fan slot of our motherboard and disabled the PWM function to use the fans at their full speed. We also tested the fans at PWM speeds and with L.N.A adapter without PWM. Noise levels with all the fans are similar. In PWM mode, with our test setup, the fans were running at minimum speed nearly the whole time. Only after extensive 3DMark Vantage sessions the fan speed rose above the minimum. Even then the fans were very silent. With L.N.A adapter one could barely hear the fans. When we disabled the PWM and ran the fans at 12V, they were clearly audible. However, increasing noise comes with increasing performance. We saw about 2C decrease in overall temperature of the case when using the 120mm fan as our exhaustfan compared to the situation where the same fan was used with L.N.A adapter or PWM. Yet again Noctua did not disappoint us. The quality is on par with previous incarnations of their fans and performance is also on a very good level.
Test verdict: "If you can live with the pricetag Noctua is a great choice. All three fans were absolutely one of the most silent one’s I’ve encountered, and while there definitely are more powerful fans available – the Noctua fans should be more than enough for cooling your case, processor cooler or even your water coolers radiator. All the fans are PWM controlled so you can control their speeding behaviour from your bios or from your motherboards control utility in your operating system. I can recommend all these fans to whoever who is looking for silent, yet reasonably powerful fan, and does want the PWM feature. Noctua won’t let you down in terms of quality!" (Ville Ilonen, rbmods.com)
25.05.2012 // CoolingTechnique.com
test.gif

NF-B9 PWM Review

Tirare delle conclusioni sulle nuove proposte di Noctua non è decisamente semplice; la casa austriaca questa volta mette decisamente tanta carne al fuoco con un "know how" costruttivo che se paragonato a quello delle aziende concorrenti mette decisamente in imbarazzo per la propria superiorità in campo fluidodinamico e non solo. Partendo da un punto di vista meramente qualitativo, le ventole offerte dalla casa austriaca sono tutte dotate di un eccellente qualità dei materiali e costruttiva; tutte le saldature di interconnessione tra i profili palari e il rotore centrale vengono fatte in maniera pressochè perfetta, con margini di tolleranza ridotti all'osso e con una struttura nel complesso decisamente ben curata in ogni sua minima parte. A sostegno di cio c'è la cura quasi maniacale dedicata allo sleeving dei cavi di controllo e di alimentazione, essa viene effettuata con una calza in multifilamento ad alta copertura siliconata, terminata da generosi tratti di termorestringente nero che ne assicura la presa e la stabilità nel tempo; a ciò viene inoltre affiancata una sleevatura direttamente nel frame della ventola che prevede specifici ponti in plastica per il mantenimento in sede dei cavetti che vanno al motore SSO della casa.
Test verdict: "Il lavoro impressionante effettuato da Noctua si vede infine nel grafico del pescaggio che solitamente pone come fanalino di coda le ventole aventi alte pressione statiche, questo con le ventole in oggetto non succede ma anzi le inserisce in vetta esaltando l'ottimo bilanciamento che gli ingegneri della casa sono riusciti a tirare fuori in maniera pressochè esemplare meritando sicuramente i nostri complimenti per il lavoro svolto." (Damiano Villa, CoolingTechnique.com)
30.04.2012 // islaBit.com
test.gif

NF-B9 PWM Review

El NOCTUA NF-B9 PWM es un ventilador de gama alta que está Recomendado por islaBit para equipos medianos, HTPC y torres pequeñas, además de pequeños radiadores o disipadores que necesiten un ventilador de 9cm con gran caudal y baja sonoridad. Además, este modelo se lleva el Premio Rendimiento islaBit, por incluir la tecnología PWM, su bajo consumo y por superar a la mayoría de ventiladores de 9cm que hay actualmente en el mercado, que tan solo son capaces de superar su caudal alcanzando ruidos de más de 29dBA, cuando este modelo contiene su nivel por debajo de los 18dBA de sonoridad máxima.
Test verdict: "Si buscas un ventilador duradero de 9cm, con excelente relación rendimiento/sonoridad, el NF-B9 PWM de Noctua seguro que da la talla." (Raúl Planelles, islaBit.com)
24.04.2012 // HWMaster.com
test.gif

NF-B9 PWM Review

La NF-P12 PWM è ottima con dissipatori e radiatori, o come ventola per case, la NF-B9 PWM è una ventola destinata all’utilizzo su dissipatori per cpu di dimensioni inferiori o su dissipatori per vga, la NF-R8 PWM è perfetta per raffreddare in maniera concentrata un determinato componente (ram, chipset, vrm). I prezzi, in apparenza elevati, sono giustificati dal bundle ricco e dalla qualità costruttiva.
Test verdict: "Con la nuova famiglia di ventole PWM, Noctua ha dotato arricchito tecnicamente le sue gia ottime ventole. I consumi sono stati ridotti visibilmente e c’è tutta la comodità del PWM. Consigliamo queste ventole a chiunque voglia raffreddare in maniera efficiente il proprio computer, sena rinunciare al silenzio." (Rocco Eduardo Battista, HWMaster.com)
05.04.2012 // Whitex-Modd.de
test.gif

NF-B9 PWM Review

Ebenfalls werden im Video alle Modelle mit einem einfachen Mikrofon, das die Lautstärke aus 10cm Entfernung misst, auf ihr Geräuschlevel getestet. Um eine weitere Orientierung im Sinne der Geräuschkulisse zu geben, haben wir zusätzlich 3 weitere Lüfter (Sharkon Silent Eagle 2000-80mm, 2000rpm @38,5m³/h, Enermax Magma-120mm, 1500rpm @117,49m³/h und ein standart-Gehäuselüfter-120mm, 1000rpm) sowie eine etwas ältere und lautere IDE-Festplatte @7200rpm dem Lautstärketest unterzogen. Schlussfolgernd kann man an dieser Stelle sagen, dass die Lüfter alle sehr gut abgeschnitten haben.
Test verdict: "Oft sind Markenlüfter überteuert und der Preis ist nicht gerechtfertigt. Ob es sich allerdings lohnt, etwas mehr Geld für Noctua-Produkte auszugeben? -Wir sagen: Ja! Die neue Lüfterserie ist aus unserer Sicht eine klare Kaufempfehlung und man hört die Qualität im wahrsten Sinne des Wortes heraus." (Tobi Borho, Whitex-Modd.de)
19.03.2012 // PCEkspert.com
test.gif

NF-B9 PWM Review

Kvaliteta izrade i materijala, kako P12, tako i B9 i R8 je na najvišoj razini. Priložena oprema (Y-adapteri, L.N. adapteri, produžni napojni kabel, vijci i gumeni čepići) je bogata, a u korisničkim nam se uputama najviše sviđa objašnjenje o održavanju ventilatora. Šlag na tortu je šest godišnje jamstvo proizvođača.
Test verdict: "svakako je riječ o proizvodima koji su u vrhu svojih klasa." (Krešimir Matanović, PCEkspert.com)

Installation Manual (PDF)

Information Sheet (PDF)

Can I disassemble my fan for cleaning?

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 the fan on 3-pin fan headers?

This fan comes with a 4-pin PWM fan connector for fully automatic speed control via your mainboard’s 4-pin PWM fan headers. Please note that the fan 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).

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.

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.

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.

What pin configuration do Noctua 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:

P14

Do you have a question concerning one of our products? Please use this form to pose a question!