Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)
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DJMan
> 3 dayI knew I was buying a good fan when the brand name is Noctua, I didnt even have to solder wire to connect it to my 3D printer, there was 3M crimps included. Doesnt move as much air as I would like to for my Afinia H480 3D printer but at least its A LOT quieter then the stock fan.
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Jason Cheers
> 3 dayThese are very nice and quiet, I bought them to install on a ram cooler I designed and printed on my 3D printer.
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Max Ramsey
17-04-2025I installed this on my 3D printer and it is dead quiet. Even when right in front of it I cannot hear the fan.
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Nick
> 3 dayI installed it on my printer, and simply put, it rattles like hell. easily 3-5 times louder than any other fan I own because of it, and I can hear the sharp rattling through headphones while in another room, but sadly its now the only one thatll fit because I spliced on a molex connector to make it plug in correctly. The rattling is coming directly from the way the fan is mounted to the motor, but as well those little silicone pads fell right off after the first time I uninstalled it to switch a print head mount.
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twmiv
> 3 dayI used this fan to replace a failed stock fan in an ICY Dock enclosure. The included accessories contain everything that is needed to adapt this to the old fans connector and the anti-vibration mounts fit perfectly as replacements for the screw holes that were previously used to secure the fan into place.
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M. Erdman
> 3 daycompletely silent, unlike the fan it replaced.
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Mr. A. Moore
> 3 dayFitted to the hot end of an Ender 3 Pro with a buck converter to reduce the voltage from 24V to 12V. Keeps the temperature just right and has reduced the fan noise by around 50%: well worth doing.
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Ä_Tännschen
> 3 dayDer kleine Lüfter von Noctua tut was er tun soll. Er lüftet für seine Baugröße sehr gut und auch leise.
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Charles Ricketts
> 3 dayPros:
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Rachel Johnson
Greater than one weekSuper quiet replacement for noisy fan on RCA 300watt blue ray w/surround sound system. Easy to replace. Easy to install.
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x10 FLX is a highly optimised, premium quality quiet fan in 40x10mm 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 a Low-Noise Adaptor and OmniJoin Adaptor Set, the NF-A4x10 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.
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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. |
Integrated Anti-Vibration PadsIntegrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks. |
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. |
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.
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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 | 12 V | 12 V | 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 |
| Colour | Brown & Beige | Brown & Beige | Brown & Beige | Brown & Beige |