heading

Having received dozens of awards and recommendations from international hardware websites and magazines, the NF-A20 has established itself as a default choice when it comes to premium-quality 200mm fans. The chromax.black.swap edition combines the NF-A20’s signature quiet cooling performance with an attractive all-black design and a bundle of swappable red, white, blue, green, yellow and black anti-vibration pads that allow the colour-customisation of the fan to match individual build colour schemes. For further customisation, a wide range of accessories such as coloured cables and anti-vibration mounts are available separately. Topped off with Noctua’s trusted premium-grade SSO2 bearing, more than 150,000 hours MTTF and 6-year manufacturer’s warranty, the NF-A20 PWM chromax.black.swap is the perfect choice for all users who value individual, focused build aesthetics just as much as class-leading quality and performance.

Please refer to our case compatibility list for detailed compatibility information.

Details
Award-winning NF-A20 design

Award-winning NF-A20 design

Having received dozens of recommendations from the international press, Noctua’s NF-A20 has become a proven premium choice for 200mm cooling needs. Its renowned efficiency has convinced tens of thousands of customers all over the world.
chromax.black.swap edition

chromax.black.swap edition

Maximising colour choices, Noctua’s chromax.black.swap edition fans can be colour-customised using the included swappable anti-vibration pads as well as optional anti-vibration mounts and cables. This makes them ideal for enthusiasts looking for true premium-grade fans that can be colour-coordinated with popular build themes such as all black, black & white or black & red.
Swappable anti-vibration pads in 6 colours

Swappable anti-vibration pads in 6 colours

The NF-A20 PWM chromax.black.swap comes with 4 white, red, blue, green and yellow as well as 8 black NA-AVP6 anti-vibration pads. By combining the various colours with black or going all black, the fan can be coordinated with most popular build colour schemes out of the box. Additional NA-SAVP6 sets for outfitting both sides in one colour can be purchased separately.
Optional coloured cables

Optional coloured cables

Noctua’s chromax line fans use a modular cabling system and come pre-fitted with a fully sleeved black NA-EC1 30cm cable. For refined colour coordination, white, red, blue, green and yellow 30cm NA-EC1 cables plus corresponding NA-YC1 y-cables are available separately.
Optional coloured anti-vibration mounts

Optional coloured anti-vibration mounts

To complement the coloured anti-vibration pads included with the fans, users can purchase chromax line NA-SAV2 anti-vibration mounts that enable the convenient, quick and vibration-free installation of fans in standard mounting holes for case fans.
154mm, 110x180mm and 170mm hole spacing

154mm, 110x180mm and 170mm hole spacing

In order to ensure broad compatibility with today’s PC cases, the NF-A20 features three sets of mounting holes: While the 154x154mm and 110x180mm spacing allow it to replace most 200mm fans, the 170x170mm spacing is used by many 230 and 250mm fans, which can thus also be replaced by the NF-A20.*
Flow Acceleration Channels

Flow Acceleration Channels

The NF-A20 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.
Stepped Inlet Design

Stepped Inlet Design

Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.
Inner Surface Microstructures

Inner Surface Microstructures

With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.
SSO2 bearing

SSO2 bearing

The NF-A20 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.
Metal bearing shell

Metal bearing shell

In order to guarantee the highest possible degree of manufacturing precision, minimum tolerance and excellent long-term stability, the chromax edition fans sport a CNC milled bearing shell made entirely from brass.
Custom-designed PWM IC with SCD

Custom-designed PWM IC with SCD

Supporting fully automatic PWM speed control, the fan uses Noctua's 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 low speeds.
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-A20 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer’s warranty.
*As there is no fixed industry standard for the size or hole spacing of 200mm, 220mm, 230mm or 250mm fans, please see our case compatibility list and carefully check both the hole setup of your chassis and the available space (the NF-A20 is 30mm thick whereas some other 200mm fans are only 20mm!) in order to verify that the NF-A20 is compatible with your chassis. In case of doubt, please contact your chassis manufacturer.
NF-A20 PWM chromax.black.swap
General
Notes and warnings
Please refer to our case compatibility list for detailed compatibility information.

FAN Specification
Size
200x200x30 mm
Mounting hole spacing
154x154, 110x180, 170x170 mm
Cable length
1cm + 30cm NA-EC1 extension cable
Bearing
Blade geometry
Rotational speed (+/- 10%)
800 RPM
Min. rotational speed (PWM, +/-20%)
350 RPM
Acoustical noise
18,1 dB(A)
Static pressure
1,08 mm H₂O
Max. input power
0,96 W
Max. input current
0,08 A
Operating voltage
12 V
MTTF
> 150.000 h
Scope of delivery
  • 8x NA-AVP6 chromax.black anti-vibration pads
  • 4x NA-AVP6 chromax.blue anti-vibration pads
  • 4x NA-AVP6 chromax.green anti-vibration pads
  • 4x NA-AVP6 chromax.red anti-vibration pads
  • 4x NA-AVP6 chromax.white anti-vibration pads
  • 4x NA-AVP6 chromax.yellow anti-vibration pads
  • 4x fan screws
6 years
NF-A20 PWM chromax.black.swap
04.12.2019 // HWready.it
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NF-A20 PWM chromax.black.swap Review

Il produttore austriaco conservando la classica qualità che lo contraddistingue ha portato i colori a modo suo, nessun led ma la possibilità di scegliere il colore dei pad anti vibrazione. Anche il cambio della colorazione, dal classico marrone al nero della struttura offre la possibilità di utilizzare queste ventole in qualsiasi tipo di build.
Test verdict: "Assegniamo il massimo dei voti a queste splendide ventole e a Noctua facciamo i complimenti per la qualità di ogni prodotto." (Mauro Santoro, HWready.it)
02.12.2019 // Nördliv Podcast
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NF-A20 PWM chromax.black.swap Review

Noctua förser Chromax serien med mångsidighet och fortsatt kvalitet. Fläktarnas styrka ligger i att vara både bra sett till de luftflöden de styr, men även att samtidigt hålla nere ljudvolym. Allt medan du själv kan välja att förse de med det utseendet just du vill ha. Sedan att det är högst nischat, och verkligen inte något för alla förringar inte på något sätt deras kvalitet.
Test verdict: "För de som är ute efter att skapa en egen ”look” i sin dator, då kan vi bara rekommendera dessa fläktar fullt ut." (Maxx Löfström, Nördliv Podcast)
28.11.2019 // PC-Gaming.it
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NF-A20 PWM chromax.black.swap Review

Nell’ultimo periodo l’azienda ha capito che una parte di mercato vuole un prodotto bello esteticamente, per questo ha rilasciato la serie Chromax e sono disponibili i nuovi accessori che completano la lineup. Questi accessori comprendono ventole di colore nero e pad antivibrazioni di vari colori per adattarsi a qualsiasi configurazione. Nel dettaglio troviamo le pluripremiate ventole NF-A20, NF-A12x15, NF-A9, NF-A9x14 e NF-A8 (rispettivamente da 200mm, slim 120mm, 92mm, slim 92mm e 80mm), nonché i corrispondenti cuscinetti antivibrazioni NA-SAVP5 e NA-SAVP6. La serie Chromax non finisce qui, comprende praticamente ogni prodotto Noctua, come i più famosi dissipatori Noctua NH-U12s, Noctua NH-U14s e NH-D15.
Test verdict: "I nuovi accessori Noctua Chromax completano la lineup con prodotti neri di fascia alta. Offrono qualità premium e consentono di personalizzare a piacimento la colorazione." (Matteo Carrara, PC-Gaming.it)

NA-SAVP6 chromax.black

  • Anti-vibration pads for NF-A20 series
  • chromax.black edition
NF-A20 PWM chromax.black.swap

NA-SAVP6 chromax.white

  • Anti-vibration pads for NF-A20 series
  • chromax.white edition
NF-A20 PWM chromax.black.swap

NA-SAVP6 chromax.yellow

  • Anti-vibration pads for NF-A20 series
  • chromax.yellow edition
NF-A20 PWM chromax.black.swap

NA-SAVP6 chromax.green

  • Anti-vibration pads for NF-A20 series
  • chromax.green edition
NF-A20 PWM chromax.black.swap

NA-SAVP6 chromax.blue

  • Anti-vibration pads for NF-A20 series
  • chromax.blue edition
NF-A20 PWM chromax.black.swap

NA-SAVP6 chromax.red

  • Anti-vibration pads for NF-A20 series
  • chromax.red edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.black

  • Anti-Vibration mounts
  • chromax.black edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.white

  • Anti-Vibration mounts
  • chromax.white edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.yellow

  • Anti-vibrations mounts
  • chromax.yellow edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.green

  • Anti-Vibration mounts
  • chromax.green edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.blue

  • Anti-Vibration mounts
  • chromax.blue edition
NF-A20 PWM chromax.black.swap

NA-SAV2 chromax.red

  • Anti-Vibration mounts
  • chromax.red edition
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.yellow

  • 4x NA-EC1 chromax.yellow 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • Yellow sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.white

  • 4x NA-EC1 chromax.white 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • White sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.red

  • 4x NA-EC1 chromax.red 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • Red sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.green

  • 4x NA-EC1 chromax.green 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • Green sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.blue

  • 4x NA-EC1 chromax.blue 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • Blue sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1 chromax.black

  • 4x NA-EC1 chromax.black 30cm extension cables
  • 4-pin connector supports both 3-pin and 4-pin fans
  • Black sleeving: ideal for creating PC builds with neat, focused aesthetics
NF-A20 PWM chromax.black.swap

NA-SEC1

  • 4-Pin Extension Cables
NF-A20 PWM chromax.black.swap

NA-SAC5

  • S-ATA to 4-pin power adaptor cable for fans
NF-A20 PWM chromax.black.swap

NA-FC1

  • Compact, highly flexible controller for 4-pin PWM fans
NF-A20 PWM chromax.black.swap

You can either buy from our local sales partners or directly from us via our official Amazon and eBay stores:



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Information Sheet (PDF)

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.

What pin-configuration do Noctua chromax line fans use?

All Noctua fans, fan controllers, cables and other accessories such as Low-Noise Adaptors use the same standard pin-assignment that has been specified by Intel and AMD. With chromax.black and chromax.black.swap fans that use all black cables, pin 1 can be identified by a white marking: pin configuration

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.

Which cases does the NF-A20 fit?

Please refer to our case compatibility list for detailed compatibility information.

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).

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.

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