Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)

(1906 Reviews)

Price
$8.37

Quantity
(10000 available )

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316 Ratings
261
25
14
3
13
Reviews
  • Christian

    > 3 day

    I originally had a Canakit case for my Raspberry Pi 4 Model B 4GB with the Canakit 30mm Fan. I wanted to mess around and overclocked the RPi from its base 1.5GHz to 2GHz but in order to do so I needed the max overvoltage applied which was level 6 which adds 0.15V I believe to the SoC. When testing the CPU under load using sysbench the 30mm fan would need to be at 5V and would be loud and nearly reach 80C which is near throttling temperature for the CPU. at 3.3V I couldnt hear the fan but it would throttle.

  • Bates Hotel

    > 3 day

    Very Happy with this fan, quieted my DVR to near silent!

  • Alexis

    10-06-2025

    Good quality

  • Denny Wislocker

    > 3 day

    Installation is easy with the rubber pull clips, quiet running

  • Commander Keen

    Greater than one week

    Basically runs just above a whisper; if youre more than eight inches from this thing, you dont know its spinning because its just not making any sound at all. Comes with a lot of adapters and such, probably spikes the price higher than it should be, but Im certainly satisfied with the reduction in RPM noise

  • Amazin Customer

    06-06-2025

    Works as expected

  • L. Liukonen

    > 3 day

    I have a heatsink for my raspberry pi that I picked up that was both noisy AND annoying as it had LEDs on the fan. Swapped it out with this fan and, while I see it spining, from a distance I hear nothing! absolutely quiet AND I am running my Pi4 24/7 at 34.56 C / 94.2 F... had to take the heatsink off to make sure the sensor was working!

  • Go Vols

    > 3 day

    Replaced a fan for a RP3B Temps now ~37c. Easy to install into a new CPU cooler.

  • The Engineer

    > 3 day

    It’s pretty quiet and blows pretty hard, I used it on a raspberry pi and My temps are about half of what they are with no fan

  • Richard

    > 3 day

    This product stopped working long before it should have... Cant return. I would have just replaced it with the same fan, but wasnt allowed that option. I have the same fans cooling my gaming PC. No problems.

NF-A4x10 5V HeaderNF-A4x10 5V Header

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO standard frame, the NF-A4x10 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x10mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearing ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set, the NF-A4x10 5V is a premium choice for demanding 5V applications.

NF-A4x10 5VNF-A4x10 5V

5V version

Many devices such as network or storage solutions use 5 volt 40mm fans. With the same operating voltage and the included OmniJoin adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V is ideal for replacing noisy or broken 5V 40mm fans.

Please Note: Being a 5V fan, the NF-A4x10 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

NF-A4x10 FACNF-A4x10 FAC

SSO2SSO2

NF-A4x10 hubNF-A4x10 hub

NF-A4x10 ISMNF-A4x10 ISM

Flow Acceleration Channels

The NF-A4x10 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.

SSO2 Bearing

The NF-A4x10 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.

Reduced motor hub size

Thanks to its streamlined, compact motor design, the NF-A4x10"s motor hub is smaller than with conventional 4cm fans. This allows for more blade surface area and thus contributes to the NF-A4x10"s superior airflow and pressure performance.

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.

NF-A4x10 5V bannerNF-A4x10 5V banner

Please Note:

Being a 5V fan, the NF-A4x10 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

NF-A4x10 PWM table NF-A4x10 FLX table NF-A4x10 5V PWM table NF-A4x10 5V table
NF-A4x10 PWM NF-A4x10 FLX NF-A4x10 5V PWM NF-A4x10 5V
Connector 4-pin PWM 3-pin 4-pin PWM 3-pin
Voltage 12V 12V 5V 5V
RPM: Max: 5000 / Min: 1000 4500 Max: 5000 / Min: 1000 4500
RPM with L.N.A. 3700 3700 - -
Acoustical Noise 19,6 dB(A) 17,9 dB(A) 19,6 dB(A) 17,9 dB(A)
Acoustical Noise with L.N.A. 12,9 dB(A) 12,9 dB(A) - -
Size 40x40x10 mm 40x40x10 mm 40x40x10 mm 40x40x10 mm

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