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🌀 Stay cool, stay silent — the fan your tech deserves!
The Noctua NF-A4x20 FLX is a premium 40mm computer case fan engineered for compact and professional setups. Delivering up to 4400 RPM with ultra-quiet 14.9 dB noise levels, it excels in cooling small form factor PCs, servers, and network devices. Its award-winning design features flow acceleration channels and acoustic optimization, paired with a full accessory kit for easy, vibration-free installation.
| ASIN | B072JK9GX6 |
| Air Flow Capacity | 9.4 Cubic Meters Per Hour |
| Best Sellers Rank | #27,444 in Computers ( See Top 100 in Computers ) #167 in Computer Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Desktop, Server, Router, Switch |
| Compatible devices | Desktop, Server, Router, Switch |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.8 out of 5 stars 2,383 Reviews |
| Item Dimensions L x W x H | 40L x 40W x 20H millimeters |
| Manufacturer | Noctua |
| Material Type | Plastic |
| Maximum Rotational Speed | 4400 RPM |
| Model | NF-A4x20 FLX |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | NF-A4x20 FLX |
| Power Connector Type | 3-Pin |
| Power connector type | 3-Pin |
| Product dimensions | 40L x 40W x 20H millimeters |
| UPC | 841500110116 |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
W**S
Nice cooler for sff aystem
Its nice for the small pc
P**W
Silence
After replacement in switch, it became silent
W**B
High quality
Very good performance and quiet. I'm using it on 3D printer to cool E3D V6 hotend.
J**S
Better and quieter
Works great, same airflow but much quieter as other brands. Comes with all the adapters to fit perfectly in any device. Highly recommend.
A**L
Super silent
Super silent, buy it
A**R
Not loud at all. Wonderful.
I used this to replace the fan in my hub. Keeps things cool.
C**N
Quiet; must have for a USG pro in your home!
I have fitted these, blowing, into my Ubiquiti UniFi USG-Pro-4 and I can report the high pitch whine is now gone. Pretty handy when you don't have a rack out of the way of habitual areas! Only been installed an hour but so far so good, and I chose to use the noise suppression mounts, they aren't recommended for this application but I wanted to try it and the resonance from the metal cover is now much more subtle. Running these fans without a cover show they are actually virtually silent, but obviously, it's not recommended to run this device with the cover off (airflow etc)!
F**O
buona
come tutte le noctua, più silenziose e più efficienti anche a bassi giri e il solito difetto . . . costano troppo
Trustpilot
1 month ago
1 month ago