Brand | Noctua |
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Item model number | NF-A6x25 |
Product Dimensions | 21.59 x 3.81 x 15.24 cm; 190 g |
Item dimensions L x W x H | 21.6 x 3.8 x 15.2 Centimetres |
Colour | Brown |
Voltage | 12 Volts |
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Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown)
Purchase options and add-ons
Product Dimensions | 25L x 60W x 60H millimeters |
Brand | Noctua |
Power connector type | 4-Pin |
Voltage | 12 Volts |
Cooling method | Air |
Compatible devices | Desktop |
Noise level | 19.3 dB |
Material | Fibre-glass reinforced PBT |
Maximum rotational speed | 3000 RPM |
UPC | 731215274114 172302657913 806291857183 163121136796 808111662885 102930672910 782386476630 842431014061 809185325683 132017920733 168141421693 804066782012 809385174876 See more |
About this item
- Premium quiet fan, 60x60x25 mm, 12V, 3-pin Molex, 3000/2400/1600 RPM, max. 19.3 dB(A), >150,000 h MTTF
- Award-winning 60x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
- Ideal replacement for noisy or broken 12V 6cm fans in DVRs, NAS, network and storage devices, 3D printers, etc.
- 3-pin FLX version provides 3000/2400/1600rpm speed settings via Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
- Includes anti-vibration mounts, fan screws, Low-Noise & Ultra-Low-Noise Adaptors, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply
Frequently bought together

Product information
Technical Details
Summary
Additional Information
ASIN | B009NQMESS |
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Customer Reviews |
4.8 out of 5 stars |
鶹 Rank |
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Date First Available | Jan. 10 2013 |
Manufacturer | Noctua |
Place of Business | RICHARDSON, TX, 75081 US |
Warranty & Support
Feedback
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Top Brand: Noctua
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This Item ![]() Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown) | Recommendations | |||||
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Price | $19.95$19.95 | $8.59$8.59 | $13.98$13.98 | $19.90$19.90 | $19.90$19.90 | $16.90$16.90 |
Delivery | Get it by Monday, Jul 28 | Get it by Sunday, Jul 27 | Get it by Monday, Jul 28 | Get it by Monday, Jul 28 | FREE Delivery | Get it by Sunday, Jul 27 |
Customer ratings | ||||||
Sold by | Noctua Cooling Solutions | JZK Express Network US | ANVISION INC | Noctua Cooling Solutions | Noctua Cooling Solutions | Noctua Cooling Solutions |
cooling method | Air | Air | Air | Air | Air | Air |
power connector type | 4-Pin | 2-Pin | 2-Pin | 3-Pin | 4-Pin | No pin |
compatible devices | Desktop | Printer | Server | Desktop | Desktop | Desktop |
max. rotational speed | 1600 rpm | 3000 rpm | 4000 rpm | 3500 rpm | 3500 rpm | — |
noise level | 19.3 decibels | 27 decibels | 30.7 decibels | 19.8 decibels | 19.8 decibels | 0 decibels |
material | Fibre-glass reinforced PBT | Plastic | Plastic | Fibre-glass reinforced PBT | Fibre-glass reinforced PBT | Hybrid Thermal Compound |
wattage | 0.96 watts | 1.8 watts | 1.2 watts | — | 1.02 watts | 0 watts |
From the brand

Noctua Cooling Solutions
Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality.
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New Releases from Noctua
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Maximising Colour Choices
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Reduced to the Essentials
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For Heavy-duty Applications
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Premium Thermal Paste
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Official Noctua Merch
Product Description


Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A6x25 FLX is a highly optimised, premium quality quiet fan in 60x25mm size. Smooth Commutation Drivetechnology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and Low-Noise Adaptors, the NF-A6x25 is a premium choice for the highest demands.

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.
Reduced motor hub sizes
Thanks to its streamlined, compact motor design, the NF-A6x25's motor hub is smaller than with conventional 6cm fans. This allows for more blade surface area and thus contributes to the NF-A6x25's superior airflow and pressure performance.
SSO2 Bearing
The NF-A6x25 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.
Flow Acceleration Channels
The NF-A6x25 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.
Scope of Delivery
- Low-Noise Adapter (L.N.A.)
- Ultra-Low-Noise Adapter (U.L.N.A.)
- 3:4-Pin Adaptor
- 30cm Extension Cable
- 4 Vibration-Compensators
- 4 Fan Screws

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-A6x25 remarkably quiet even at very close distances.
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NF-A6x25 PWM
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NF-A6x25 FLX
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NF-A6x25 5V PWM
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NF-A6x25 5V
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Customer Reviews |
4.6 out of 5 stars 2,437
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4.8 out of 5 stars 1,290
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4.7 out of 5 stars 78
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4.8 out of 5 stars 123
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Connector | 4-pin PWM | 3-pin | 4-pin PWM | 3-pin |
Voltage | 12V | 12V | 5V | 5V |
RPM: | Max: 3000 / Min: 550 | 3000 | Max: 3000 / Min: 650 | 3000 |
RPM with L.N.A. | 2300 | 2400 | - no data | - no data |
RPM with U.L.N.A. | - no data | 1600 | - no data | - no data |
Acoustical Noise | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) | 19,3 dB(A) |
Acoustical Noise with L.N.A. | 13,7 dB(A | 14,5 dB(A) | - no data | - no data |
Acoustical Noise with U.L.N.A. | - no data | 8,2 dB(A) | - no data | - no data |
Size | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm | 60x60x25 mm |
Brands in this category on 鶹
Customer reviews
Customers say
Customers like the quiet operation, airflow, and quality of the electronic component fan. They mention it sounds like the wind, is well-built, and works really well.
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Customers like the quiet operation of the fan. They mention it's super duper quiet, still pushes plenty of air through, and sounds like the wind.
"Both the packaging and the fan are quality made. Very quiet and efficient fan. You get what you pay for. Very satisfied!" Read more
"...XBox and it made a huge difference, going from annoying whine to whisper quiet...." Read more
"Used this fan to replace the factory fan in my t500RS wheel - It is so quiet i had to shine a light on it to see if it was moving...." Read more
"Quiet, expensive and ugly. Used to cool vrms on motherboard." Read more
Customers like the airflow of the product. They mention it's an excellent fan to replace an existing noisy fan in an oscilloscope. They also say it's efficient and perfect for Thrustmaster T300 wheels. Some customers have had no problems with either hot end temperature or noise.
"...This was the fan I picked due to Noctua's reputation. Solid fan." Read more
"...it actually seems to be running much cooler now." Read more
"...As always, Noctua has made great fans and never disappoint." Read more
"...Way more airflow to cool things down and it's whisper quiet...." Read more
Customers are satisfied with the quality of the product. They mention it's quiet, well-built, and never disappoints.
"Great product and the quality was good. The price was just right. would purchase from the seller again" Read more
"good product" Read more
"...As always, Noctua has made great fans and never disappoint." Read more
"quiet, well built and hideous. What else can you say, its a noctua!" Read more
Customers like the functionality of the product. They mention it works really well, is virtually silent, and works well with the Thrustmaster T300RS.
"This works great. I will not buy any other fan." Read more
"It’s been about two months, So far it’s working great." Read more
"Used to replace a very noisy cooling fan in a 3D printer. It works really well in that respect; it's virtually silent...." Read more
"Does what you want it to do. A significant upgrade for most fan installations." Read more
Reviews with images

Noctua is always great
Top reviews from Canada
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Reviewed in Canada on June 26, 2025Verified PurchaseLa qualité Noctua est indéniable, mais ils sont très chers.
- Reviewed in Canada on May 19, 2025Verified PurchaseVery quiet little fan! Replaced the original fan in my Bell 9242 PVR box. It has a lower maximum RPM than the original fan, but by powering it directly with 12V (instead of the PWM controlled output) it actually seems to be running much cooler now.
- Reviewed in Canada on April 22, 2025Verified PurchasePerforms like what you would expect from Noctua. Silent with great airflow. Love these.
- Reviewed in Canada on February 11, 2025Verified PurchaseAn exact fit (6cm) exhaust - cooling fan for an old McIntosh MS 300 music server. This music server is nothing more than a continuously running computer, and the original fan was on its last legs. The new Noctua fan will last for years. Nor mor concerns of overheating or noise.
Want the best, buy the best !
- Reviewed in Canada on February 5, 2025Verified PurchaseUsed these to swap out the fans from an original Xbox as the originals were very noisy. As always, Noctua has made great fans and never disappoint.
Used these to swap out the fans from an original Xbox as the originals were very noisy. As always, Noctua has made great fans and never disappoint.
Images in this review
- Reviewed in Canada on January 3, 2025Verified PurchaseNeeded a 60mm fan for a Pentium III 1GHz Socket 370 cooler. This was the fan I picked due to Noctua's reputation. Solid fan.
- Reviewed in Canada on January 3, 2025Verified PurchaseGreat product and the quality was good. The price was just right. would purchase from the seller again
- Reviewed in Canada on June 22, 2023Verified PurchaseI used this to replace the case fan in my OG XBox and it made a huge difference, going from annoying whine to whisper quiet.
I was able to use the included rubber mounting rivets to securely attach the fan to the metal grill. The fan also comes with two sleeved low-noise adapters, a sleeved extension cable and a sleeved Molex adapter cable, none of which I used but are nice to have on hand for other builds.
Top reviews from other countries
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Bruno TricerriReviewed in Italy on December 20, 2021
5.0 out of 5 stars Ottimo
Verified PurchaseProdotto di ottima fattura e molto silenzioso
Montato e dimenticato di averlo
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GaiusReviewed in France on February 23, 2025
5.0 out of 5 stars Au top et silencieux
Verified PurchaseComme d'habitude, acheté pour échanger un ventilateur bruyant sur un Hp T1500 G4
Celui-ci est parfait, merci Noctua🫶
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NYSLAVYReviewed in Mexico on June 2, 2022
5.0 out of 5 stars RUIDO ¿QUE ES ESO ? CON NOCTUA INCREIBLE.
Verified PurchaseINCREÍBLE. SE COMPRA ESTE FAN PARA REEMPLAZAR EL RIDÍCULO VENTILADORCITO QUE ESTA DE FABRICA EN UNA TARJETA MADRE BIOSTAR AMD MODELO A68N (CPU integrada) ESE VENTILADOR ESCANDALOSO RUGÍA TERRIBLEMENTE. SE QUITA SE COLOCA EL NUEVO Noctua NF-A6x25 FLX, Ventilador AL CONECTARLO FUERA DEL EQUIPO RUN RUN NI MODO SE ESCUCHABA FUERTE DESPUÉS DE COLOCARLO Y CERRAR EL EQUIPO ES TOTALMENTE FANTÁSTICO CERO RUIDO ABRÍ LA TAPA DEL PC Y SI ESTÁ EN FUNCIONAMIENTO CON UNA FUENTE IDEAL SILENCIOSA LA PC NO SE ESCUCHA NADA Y PUEDES TRABAJAR EN LA NOCHE SIN AFECTAR A TERCERAS PERSONAS.
EN TARJETAS MADRE DE MAYOR CALIDAD REALIZAMOS CAMBIOS SORPRENDENTES CON ESTE VENTILADOR.EN LAS TARJETAS MADRE CON PROCESADOR INTEGRADO ES UN POCO MÁS COMPLICADO PORQUE DEBES DECIDIR SI DESEAS RUIDO O EFICIENCIA EN TEMPERATURA DEL CORE TEMP CPU. EN AMD ENFRIA POCO SI LO HACES SILENCIOSO ALCANZA 60 GRADOS CENTÍGRADOS FORZANDO A VARIAS APLICACIONES ABIERTAS A LA VEZ..
SI SOLO USAS UNA APLICACIÓN LA TEMPERATURA ENTRE LOS 40 A LOS 52 GRADOS CENTÍGRADOS EN VELOCIDAD MÁXIMA
EN INTERNET 60 GRADOS CON APLICACIONES BÁSICAS SI BAJA A LOS 40 GRADOS CENTÍGRADOS AMD SE CALIENTA MAS QUE INTEL ES COSA DE COMO USAS LA PC Y AYUDARSE CON UN MEDIDOR DE TEMPERATURA PARA OBSERVAR EL SOBRECALENTAMIENTO
UNA NOTA APARTE CON VENTILADOR RUIDOSO SI SE ENFRIA A 30 GRADOS CENTÍGRADOS EL CPU. PARA CORREGIR ESTE DEFECTO SE COMPRAN 2 VENTILADORES NOCTUA PARA ENFRIAR TOTALMENTE LA PC Y EL RESULTADO ES ESTUPENDO SE ESTABILIZA EN 30 A NO MAS DE 50 GRADOS CENTÍGRADOS.
ES INCREIBLE EL LOGRO CON NOCTUA YO HABÍA USADO 3 MARCAS TOTALMENTE RECONOCIDAS Y DE PRESTIGIO PERO ESTA MARCA QUEDE ASOMBRADO Y TIENE CONECTORES PARA AYUDARTE A TENER UN EQUIPO EN FUNCIONAMIENTO PERFECTO
EXCELENTE PRODUCTO SIN ENGAÑOS EL COLOR NO ES ALGO ESPECTACULAR PERO LA FUNCION DE CASI ELIMINAR EL RUIDO LO CUMPLE SATISFACTORIAMENTE.
PERFECTAMENTE FUNCIONA