The NF-A9 is a highly optimised, premium quality quiet 92mm fan. Featuring Noctua’s AAO (Advanced Acoustic Optimisation) frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A9 further improves the renowned quiet cooling performance of the award-winning NF-B9. The FLX version provides 1600/1250/1050rpm speed settings via the supplied Low-Noise Adaptors in order to provide full flexibility in fine-tuning the fan for maximum ventilation performance or near-silent operation. Its superb running smoothness, reference-class SSO2 bearing and Noctua’s trusted premium quality make it an elite choice for the highest demands.

Succeeding the award-winning NF-B9

Succeeding the award-winning NF-B9

Noctua's NF-B9 fan has become a default-choice among PC enthusiasts looking for a premium quality quiet 92mm fan. Thanks to its thoroughgoing aerodynamic optimisations, the NF-A9 provides higher static pressure and an even better airflow/noise ratio than its much acclaimed predecessor.
Flow Acceleration Channels

Flow Acceleration Channels

The NF-A9 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.
AAO Frame

AAO Frame

Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.
Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard screws and other mounting systems.
SSO2 Bearing

SSO2 Bearing

The NF-A9 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.
Smooth Commutation Drive 2

Smooth Commutation Drive 2

The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A9 remarkably quiet even at very close distance.
3 speed settings for full flexibility

3 speed settings for full flexibility

Providing 1650, 1250 and 1050 rpm speed settings via the supplied Low-Noise and Ultra-Low-Noise Adapters, the NF-A9 FLX (Flexibility) can be fine-tuned for superior airflow or maximum quietness.
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 the supplied 3:4 pin adaptor allows the connection of the fan directly to the power supply.
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-A9 features an MTBF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.
FAN Specification
92x92x25 mm
Mounting hole spacing
82,5x82,5 mm
Blade Geometry
Frame Technology
AAO (Advanced Acoustic Optimisation)
Rotational Speed (+/- 10%)
1600 RPM
Rotational Speed with L.N.A. (+/- 10%)
1250 RPM
Rotational Speed with U.L.N.A. (+/- 10%)
1050 RPM
Acoustical Noise
17,1 dB(A)
Acoustical Noise with L.N.A.
11,6 dB(A)
Acoustical Noise with U.L.N.A.
8,4 dB(A)
Static Pressure
1,62 mm H₂O
Static Pressure with L.N.A.
1,04 mm H₂O
Static Pressure with U.L.N.A.
0,71 mm H₂O
Max. Input Power
0,84 W
Max. Input Current
0,07 A
12 V
> 150.000 h
Scope of Delivery
  • Low-Noise Adaptor (L.N.A.)
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • 3:4-Pin Adaptor
  • 30cm Extension Cable
  • 4 Vibration-Compensators
  • 4 Fan Screws
6 years
02.11.2015 // Hardaily.com

NF-A9 FLX Review

Los ventiladores Serie A de Noctua están recomendados por Hardaily como ventiladores suplementarios (versiones no PWM), sustitutos de ventiladores más modestos o viejos para lograr mejor ventilación. Las versiones PWM son altamente recomendadas por Hardaily como sustitutos en los disipadores o radiadores y para que tengan autocontrol, ya que son los más potentes también. Todos ellos son perfectamente válidos para torres, servidores, para disipadores o incluso radiadores, siempre que sean compatibles con las medidas estandarizadas de 4 8 y 9cm. Todos estos ventiladores de Noctua son de los más duraderos y resistentes del mercado.
Test verdict: "Estos productos son prácticamente perfectos." (Raul Planelles, Hardaily.com)
26.06.2015 // TugaReviews.com

NF-A9 FLX Review

Como é habitual a Noctua apresentou-nos excelentes ventoinhas para qualquer tipo de configuração, desde da qualidade de construção até a performance e não esquecendo os acessórios que completam este produto, as ventoinhas Noctua são algo que os entusiastas e até o utilizador comum devem ter em pensamento quando quiserem qualidade e performance até ao ultimo milímetro. Juntando toda a nova tecnologia, a Noctua obteve excelentes resultados e isso está a olhos vistos, a marca é conhecida por ser eximia nos seus produtos, e podemos comprovar isso ao testar estas excelentes ventoinhas.
Test verdict: "Para finalizar só me resta dar a pontuação que estes excelentes produtos merecem, mais uma vez, a Noctua arrecada mais uma vez o ouro devido a sua excelente qualidade e eficácia." (Napoleão Silva, TugaReviews.com)
10.05.2015 // PC Ekspert

NF-A9 FLX Review

Kvaliteta materijala i izrade je nešto na što Noctua posebno pazi a to se odrazilo i na ove nove modele. Performanse svih modela su u skladu s onime što deklarira proizvođač i kod Noctue se dobiva točno ono što se i plaća. PWM hladnjaci su po običaju na maksimalnom broju okretaja malo čujniji, no performanse se ne gube nimalo uz upotrebu L.N. adaptera pri čemu se buka ipak dosta smanji.
Test verdict: "Sve u svemu, Noctua uspješno nadograđuje svoj lineup i kupci će kao i uvijek biti vrlo zadovoljni." (Krešimir Matanović, PC Ekspert)
11.03.2015 // OverclockersClub.com

NF-A9 FLX Review

Noctua is always striving to create a better balance between noise and performance. Noctua is always pressing forward and advancing the engineering behind the products released. If you ask anyone who has quiet, high performance fans for computing, Noctua is going to be on the tip of the tongue. I believe Noctua will continue to strive for perfection by releasing new products. These fans are just a set of the many that have come before and the many that will continue to be released.
Test verdict: "If you want less sound humming from your computer case and better cooling, look no further. Even with their size, these fan models with their high static pressure are up to the challenge. As with all of its products, these fans come with a six year warranty, which is longer than some fans last all together." (Allen Woo, OverclockersClub.com)
10.03.2015 // HardZone.es

NF-A9 FLX Review

Noctua sigue siendo Noctua, y la calidad de sus productos la mejor. La verdad es que no tienen prácticamente ningún inconveniente si obviamos el apartado estético, algo que siempre ha sido criticado por sus usuarios.
Test verdict: "La calidad de los materiales es la mejor, su funcionamiento impecable y su precio decente para lo que ofrece (alrededor de 16 euros). No podemos hacer otra cosa que recomendarlos para cualquier aplicación que se desee." (Rodrigo Alonso, HardZone.es)
03.03.2015 // PureOverclock.com

NF-A9 FLX Review

As always, sound levels are superb with these fans. While my opinions are subjective, what I found was after 45 dBs, that’s when I felt a fan was getting too noisy. Nothing about the Noctuas sounded too loud while testing them even at max speed, but with the plethora of LNAs and ULNAs to add to the fans, even if you didn’t have a way to control the fans it was unlikely you couldn’t tone them down to where you would be happy with them.
Test verdict: "Overall, I believe Noctua makes an excellent product. There really isn’t anything I can complain about except for the price, and even then the price is understandable. If you need good air flow, low noise and have a small form factor case that needs some better fans, I could definitely recommend what Noctua has to offer here." (Josh Jackson, PureOverclock.com)
18.02.2015 // PCGamers.net.au

NF-A9 FLX Review

Last year, Noctua gave us 120 and 140mm fans with a technology feature list that they struggled to fit on the back of the packaging. The designers had improved the bearings, the fan blades, the frame, mounts - basically everything about their previous (and very successful) design to further improve the efficiency to noise ratio. At the time it was great news for those looking to silence their medium to large sized PCs. Now there is also good news for builders looking to maximise the airflow whilst minimising the noise of their mini ITX builds with the NF-A8 and NF-A9 series of fans that include all the bells and whistles of their larger siblings. We also tested a pair of 40mm fans for chipsets and other really compact applications.
Test verdict: "If silence is critical to your build, the Premium series from Noctua is worth the price and a safe option." (Phil Carroll, PCGamers.net.au)
12.02.2015 // GuiaHardware.es

NF-A9 FLX Review

Si buscas unos buenos ventiladores de tamaño diferente a los de 12 y 14 cm, los has encontrado, y no es fácil ver fans decentes de 92 mm, 80 mm o menor tamaño. Noctua ha conseguido trasladar la calidad de sus ventiladores a otros tamaños. Su precio es algo elevado, pero estás pagando calidad de verdad.
Test verdict: "Esperamos que os haya gustado la review, desde GuíaHardware vamos a otorgar a los ventiladores Noctua NF-A un 8 por su excelente calidad. Actualmente se encuentran sin duda entre los mejores ventiladores de 80 y 92 mm." (Sergio Hinarejos Corberá, GuiaHardware.es)
09.02.2015 // QWERTYmag.it

NF-A9 FLX Review

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.
Test verdict: "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)
03.02.2015 // PC Master Magazine

NF-A9 FLX Review

Σε δοκιμή που έκανα η θερμοκρασία σε σχέση με απλά και φθηνότερα ανεμιστηράκια ίδιου μεγέθους ήταν η μείωση σε GPU-CPU κοντά στους 4Cº, σε πλήρη ταχύτητα. Λόγο του ΑΑΟ(Advanced Acoustic Optimisation) και των Anti-Vibration pads ακουγόταν μόνο ο θόρυβος του ανεμιστήρα χωρίς κανένα απολύτως τρίξιμο. Με τα 6 χρόνια εγγύησης αλλά κα την ΑΑΑ ποιότητα κατασκευής τα fan της Noctua είναι απλά από τα καλύτερα που μπορεί να προμηθευτεί κανείς για το PC του.
Test verdict: "Η Noctua είναι για άλλη μία φορά πιστή στο ραντεβού της με την ποιότητα και τις επιδόσεις και δέχεται πάλι «Ά» σε ότι έχει να κάνει με την ψύξη των PC μας!" (Apostolos Karavias, PCMaster Magazine)

Installation Manual (PDF)

Information Sheet (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.

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.

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