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❄️ Cool your rig, not your vibe — silence and speed in perfect harmony!
The Noctua NF-A4x20 FLX is a compact 40x40x20mm case fan engineered for high-performance cooling with a max speed of 5000 RPM. Featuring advanced acoustic optimization and a low noise level of 14.9 dB, it ensures powerful airflow without disruptive sound. Its flexible 3-pin connector and extended cable length simplify installation, while a 6-year warranty guarantees long-term reliability for professional-grade PC builds.
| ASIN | B071J8CZP9 |
| Best Sellers Rank | #36,152 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #176 in Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Desktop, Laptop |
| Cooling Method | Fan |
| Customer Reviews | 4.8 out of 5 stars 2,588 Reviews |
| Global Trade Identification Number | 09010018100112 |
| Importer Contact Information | Acro Engineering Company, Z-41, Sanjay Colony II, Pocket Y, Sanjay Colony, Okhla Phase II, Okhla Industrial Estate, New Delhi, Delhi 110020 |
| Included Components | Case Fan |
| Item Type Name | Case Fan |
| Item Weight | 50 Grams |
| Manufacturer | Noctua, Rascom Computerdistribution Ges.m.b.H. Huttengasse 71-75 A-1160 Wien Austria |
| Manufacturer Contact Information | Rascom Computerdistribution Ges.m.b.H. Huttengasse 71-75 A-1160 Wien Austria |
| Max Rotational Speed | 5000 RPM |
| Model Number | NF-A4x20 FLX |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Number of Packs | 1 |
| Packer Contact Information | Rascom Computerdistribution Ges.m.b.H. Huttengasse 71-75 A-1160 Wien Austria |
| Part Number | NF-A4x20 FLX |
| Power Connector Type | 3-Pin |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
| Warranty Description | 6 year manufacturer |
S**H
Just Wow
I have replaced stock fans from my Unifi Ubiquiti USG Pro and I here the sound barely, before with stock fans I mom used to complain about noise while she was in other bedroom. Now no sound from the fans at all, for your reference I am not using any low noice adaptors. I will purchase two more to replace in 24 port PoE switch.
R**E
Very professional
As expected. Is not very silent but not too loud either. Comes with all kinds of connections and is very professional. Im using it for my 3d printer and the wind power is just 👌🏻. Will probably replace the internal fan with another noctua too
D**N
Perfect for noisy TP-Link Switches
I bought a new TP-Link Switch and it was ridiculously noisy. I mean, I get that its supposed to live in a server room but surely they could've done something to tone it down a bit. Two of these to replace the ones inside the switch have made it almost silent while still providing sufficient airflow.
D**N
Awesome
Works great in my switch, way quiter and moves the same amount of air.
M**.
Perfect for flex atx power supplies
Great silent fan! Works very well for replacing loud fans on flex atx power supplies
S**A
Me ha ayudado.
Lo ocupe para proyectos de electrónica y la verdad me a ayudado demaciado, me encanta que traiga demás conexiones para su configuración y entre otros más. Sinceramente muy buena marca Noctua.
P**.
Ventilo NOCTUA, le top du silence
Comme toujours lorsque l'on a l'habitude de NOCTUA c'est génial. J'ai remplacé le ventilateur d'un switch qui faisait presque 42 dBs, impossible de travailler dans la même pièce. Avec le Noctua, on ne l'entend pas tourné, mais cela refroidit super bien Entre les deux ventilateurs, on pourrait même ajouté1 à 2 étoiles de plus
Trustpilot
1 week ago
3 weeks ago