Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)
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Kevin S
Greater than one weekWow this is a QUIET tiny fan . Used it to replace a different brand 40mm fan and the noise reduction was immediately apparent. I have to stick my finger in the fan to even know its working its that quiet.
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peterfram
> 3 dayDrops temps by 28 degrees on Raspberry Pi 4 and I cant hear any noise from 3 feet away at least!
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Jonathan E.
> 3 daySo quiet! Replaced a fan in my Amcrest security system that was so loud. Great product
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Robert B.
> 3 dayI use them on my Pi 3 to keep it cool, works great and quiet.
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Linda Feres
> 3 dayI no longer have to listen to the outrageous loud fans in my security DVR.
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FrankF
> 3 dayI used this to replace both the CPU fan and internal outward facing fan in my Amcrest DVR. It works really well and is extremely quiet, which was the issue I was having with the original DVR fans.
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vfilipch
> 3 dayThe best. Period.
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James
Greater than one weekUsing this on my Ender 3 and had originally thought it did not work it was so quiet!! The PSU fan is now the loudest fan on my printer.
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Christopher Karman
Greater than one weekThe fan is quieter than a typical cheap fan you can find online. However, it doesnt seem to be as quiet as I would expect for a fan from Noctua especially at this price point. However, this being a 5V fan, it does work quite nicely off USB power (adapter required).
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Mister B
> 3 dayPerfect fan for a Dreamcast fan mod (3D printed mounting hardware available on eBay). Its quiet and it moves a surprising amount of air despite being tiny.
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.
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.
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Flow Acceleration ChannelsThe 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 BearingThe 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 sizeThanks 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 MicrostructuresWith 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. |
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.
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| 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 |