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Noctua NF-A4x10 5V, High-Performance Quiet Fan 40mm

Based on 3,963 reviews
Condition: New
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$15.95
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Arrives Monday, Nov 2
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At a glance

Condition
New
Size
40x40x10 mm
Model
NF-A4x10 5V
Material
Fibre-glass reinforced PBT
Power Connector Type
3-Pin
Voltage
5 volts
Cooling Method
Air
Warranty
6 year manufacturer’s warranty
Works with
Desktop

Features 5

  • Premium quiet fan, 40x40x10 mm, 5V, 3-pin Molex, 4500 RPM, 17.9 dB(A), >150,000 h MTTF
  • Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • Ideal replacement for noisy or broken 5V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
  • 3-pin 5V version with 4500rpm, not to be used at 12V (such as in PC environments)

Description

Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality. 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. 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. 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. 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. 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. 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. 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.

Specs 21

Product Dimensions 1.57"L x 1.57"W x 0.39"H
Brand Noctua
Power Connector Type 3-Pin
Voltage 5 volts
Cooling Method Air
Noise Level 17.9 db
Material Fibre-glass reinforced PBT
Maximum Rotational Speed 4500 rpm

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 2

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Top Amazon Reviews


Silent Powerhouse: Noctua NF-A4x10 5V Premium Quiet Fan for Raspberry Pi
Size: 40x40x10 mm
Managing temperatures while maintaining a tranquil environment is a top priority for Raspberry Pi enthusiasts, and the Noctua NF-A4x10 5V Premium Quiet Fan proves to be an exceptional solution. This fan, tailored for Raspberry Pi setups, is a testament to Noctua's commitment to performance, quiet operation, and quality. Here's why this fan has earned my highest recommendation: Whisper-Quiet Excellence: Noctua's reputation for producing exceptionally quiet fans shines through with the NF-A4x10 5V model. Its advanced engineering ensures that it operates with minimal noise, making it an ideal companion for workspaces, living areas, and anywhere tranquility is cherished. Perfectly Tailored: Designed specifically for Raspberry Pi applications, this fan is a seamless fit for various Raspberry Pi models. Its 5V version aligns flawlessly with the power requirements, simplifying the setup process and ensuring optimal compatibility. Efficient Cooling: Despite its quiet operation, the NF-A4x10 5V is highly effective in dissipating heat. Whether you're running resource-intensive tasks or utilizing your Raspberry Pi in a passive setup, this fan ensures that temperatures remain within safe limits. Premium Build Quality: Noctua's dedication to quality is evident in every detail of this fan. The premium components and meticulous construction guarantee a fan that's built to last. Its reliability contributes to the overall longevity of your Raspberry Pi setup. Thoughtful Design: The fan's 3-pin design and 5V compatibility ensure easy integration into your Raspberry Pi's GPIO pins. This user-friendly approach streamlines the setup process, allowing you to focus on your projects without wrestling with complex installations. Enhanced Longevity: By actively managing temperatures, the NF-A4x10 5V fan supports the extended lifespan of your Raspberry Pi. It safeguards your investment and reduces the risk of overheating-related issues that can impact performance. Minimalistic Aesthetics: The fan's clean and unobtrusive appearance complements the Raspberry Pi's design. Whether your setup is on display or tucked away, this fan's minimalistic aesthetics blend seamlessly with your chosen arrangement. Trusted Brand: Noctua's reputation for producing high-performance cooling solutions is well-deserved. With a track record of delivering excellence, you can confidently rely on the NF-A4x10 5V fan to meet and exceed your cooling expectations. In conclusion, the Noctua NF-A4x10 5V Premium Quiet Fan is a testament to thoughtful design and exceptional engineering. Its silent operation, efficient cooling, and compatibility with Raspberry Pi setups make it an invaluable addition for enthusiasts seeking both performance and tranquility. Whether you're a Raspberry Pi hobbyist or a professional, this fan is a must-have for managing temperatures and ensuring the optimal performance of your beloved projects. Quietly usher in a new era of cooling excellence with the Noctua NF-A4x10 5V Premium Quiet Fan. ... show more
Reviewed in the United States on August 19, 2023 by Nickolas F. Krader

One of the nicest fans I've ever used.
Size: 40x40x10 mm
This is a great little fan, although the air movement may not be substantial enough for some more demanding applications. I am just using this to replace the super cheap fan that came with my Raspberry Pi case, so it was perfect for me. This fan is extremely quiet to the point where I forget that it's running on my desk two feet away from me; quiet audio or nearby PC fans easily drown it out. Little things like the rubber pads on the corners and a decent type of bearing definitely help keep things quiet as well. It also comes with some vibration-dampening silicon mounting hardware, but my case is too thick to use them properly. In fact, I'm using screws that are too narrow to avoid drilling my case to fit the proper screws, and I haven't had any vibration issues yet. While it's much more quiet than the fan I replaced, it does move a bit less air. I don't have actual air movement specs for the old fan, but it spun over 5000 RPM, so it makes sense that it would move more air. Once plugged in, the old fan was able to propel itself across my desk until it's wires were taut or it fell over. The A-Series isn't quite the show-off in that regard, but it still cools off my Pi very nicely. My idle temp with the old fan was 38-41 degrees, and now it's 40-43. Mind you, my system is overclocked to 1.4ghz, and idle temps would hit 60 degrees without a fan. Everything is still nice and cool, so I'll gladly take the silence in exchange for running slightly warmer. This fan comes with a lot of great extra hardware and adapters. That said, I wish it came with an adapter for the Raspberry Pi, considering how many other people seem to be using this fan for this application. Like other reviewers, I needed to make a minor modification; I had to carefully cut away some of the tape, unpin the connector, snip the yellow cable, re-tape the wires, and re-pin the connector to match the GPIO pins on the Pi. It only took about five minutes and required some basic tools, but it certainly voids any warranty or chance for a return/exchange. If I could get nit-picky, it also doesn't have the most flexible wiring unless you strip all of the wrapping, but it's still quite workable. ... show more
Reviewed in the United States on August 15, 2017 by Amazon Customer

Works in a FLIR DVR
Size: 40x40x10 mm
A small, quiet, and powerful fan. Noctua always provides a quality product. I used it to replace a 5v fan in a FLIR DVR for security cameras. The wire adapter was a plus, but I didnt end up needing it. Just make sure you plug it in the correct orientation. The unit runs cool and quiet now. At a similar cost to other fans, the Noctua was a great value for a top quality fan. ... show more
Reviewed in the United States on March 17, 2026 by Green Probe

Works Great with Raspberry Pi in iUniker Case
Size: 40x40x10 mm
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 couldn't hear the fan but it would throttle. I decided to buy the iUniker case here on Amazon which includes a 40mm fan. The 40mm fan is definitely better than the 30mm however it was still loud and throttling if I used the 3.3V plug in order to keep the fan silent. I already loved Noctua for the heatsink and fans in my desktop so decided to buy their 5V 40x10mm fan. I have no regrets. First I just love the Noctua aesthetic. It stands out. But secondly performance is what really matters here. On the 5V pinout under sysbench the fan keeps the CPU at 70*C. However it is very loud presumably because it is significantly higher RPM than the other two fans I tested. It is a quiet fan, but once the fan is cycling against the mesh of the iUniker case the fan becomes noisy. However, on the 3.3V pinout the fan is dead silent. And even better, the temperature under sysbench maxes out at 75*C well under the throttling point. I'm currently using the scotchlocks and 2pin adapter to connect to the connectors I cutoff from the 30mm Canakit fan. I'll probably try making the wires shorter and soldering them directly to the wires with the connectors so that I can keep the assembly completely within the case. If I mess that up though, I'll happily purchase this fan all over again! ... show more
Reviewed in the United States on November 13, 2020 by Christian

Worth Every Penny
Size: 40x40x10 mm
Worth every penny and not disappointed I purchased this fan over the other brands. Nice fan kit with multiple adapter cables for whatever application this fan is used for. I used it for additional cooling on a Electo-Cookie Raspberry Pi 5 enclosure. Very quiet, well built and moves a decent amount of air. Perfect for my application. ... show more
Reviewed in the United States on April 12, 2026 by Robert A. Cox

Works for a Dreamcast fan swap!
Size: 40x40x10 mm
Replaced the fan in my Dreamcast! So easy to install it looks clean and it runs awesome. It’s super quiet I also replaced the power supply to run it on usb C. The fan still powers on and runs easy peezy! The Dreamcast is cool and quiet! It has the signature noctua brown color though lol but in the Dreamcast you never see it. Make sure if you’re gonna swap the fan in your Dreamcast you buy a little 3D printed kit! This isn’t plug and play with that console! ... show more
Reviewed in the United States on October 11, 2026 by Austin W

Nice quality, quiet, and long-lasting 5V fan
Size: 40x40x10 mm
Came with a nice set of connections to connect fan and further dampen noise. I wired this in to my old N64 console, that was having some high heat issues, and it quietly keeps everything nice and cool. I really like it and I am pleased with the airflow volume. Perfect for my needs.
Reviewed in the United States on December 21, 2023 by LDJG

Installed this upgrade for my MisterFPGA
Size: 40x40x10 mm
I can't contain my excitement about this product and the company behind it! The performance of this item is just outstanding – it works flawlessly as intended. The best part is that there's no need for any wire modification. They've even included a 3-pin to 2-pin adapter for the MisterFPGA, making the installation process a breeze. Unlike what you might have seen on the internet or forums, you can simply move the wire around and place it in, without any further tinkering or hassle. One of the standout features is how quiet it is. I had a previous fan that came with my device, but it turned into a noisy nightmare resembling a fork in a blender on just the third day of ownership. It's such a relief to find a replacement that performs exceptionally well and remains whisper-quiet even during extended use. Moreover, the anticipation for my A/V card for my BVM has been a long journey since my pre-order back in May of 2022. However, this product has made my wait more bearable by ensuring optimal performance and cooling for my MisterFPGA system. Overall, I couldn't be happier with this purchase and the top-notch experience provided by the company. They've truly delivered on their promises, and I highly recommend this product to anyone in need of a reliable and silent cooling solution for their MisterFPGA or similar devices. Kudos to the company for creating such an excellent product and offering superb customer service! ... show more
Reviewed in the United States on July 23, 2023 by NegroISO
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