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🌬️ Stay cool, stay quiet, stay ahead.
The Noctua NF-A4x20 PWM is a premium 40mm cooling fan designed for compact devices like 1U servers, routers, and NAS units. It features a max speed of 5000 RPM with ultra-quiet operation at 14.9 dB, advanced acoustic optimization, and smart 4-pin PWM speed control. Included accessories ensure easy installation, while Noctua’s 6-year warranty guarantees long-lasting reliability.
| ASIN | B071W93333 |
| Air Flow Capacity | 40 Cubic Centimetres Per Second |
| Best Sellers Rank | 22,165 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 141 in Computer Cases |
| Brand | Noctua |
| Compatible Devices | Potential Compatible Devices: ['Router', 'Switch', 'Small Desktop'] |
| Compatible devices | Potential Compatible Devices: ['Router', 'Switch', 'Small Desktop'] |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.8 out of 5 stars 1,963 Reviews |
| Item Dimensions L x W x H | 40L x 40W x 20H millimetres |
| Manufacturer | SER FLYMON |
| Manufacturer Part Number | NF-A4x20 PWM |
| Material | Metal Plastic |
| Max Rotational Speed | 5000 RPM |
| Model Number | NF-A4x20 PWM |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Power Connector Type | 4-Pin |
| Power connector type | 4-Pin |
| Product dimensions | 40L x 40W x 20H millimetres |
| UPC | 841500110109 |
| Voltage | 12 Volts |
M**N
Very quiet
Got 3 of these in my 1U server and it’s very quite, compared to my old fans.
F**9
Quieten down now!
Did the job, replaced fans on Netgear 10GB appliances, and they sit quietly now in the office!
I**Y
Brilliant
Ticks every box and is brilliant value for money
I**Z
Producto muy bueno, envío premium lento.
Noctua es símbolo de calidad aunque un poco caro son sus productos. Para Canarias no recomiendo los envíos premium ya que tardan lo mismo que los normales.
S**E
The gold standard fans for quieting noisy computer gear.
I used these to replace the 6 noisy fans inside an Arista 7050S-52 Enterprise-grade network switch. All the electricals lined up, but did have to 3D print up some extra spacers, since they're less thick. They're superbly quiet. Despite them being great fans, they're expensive.
K**C
Running it inside Mikrotik CRS317-1G-16S+
Adding adding 10G copper transceivers, the stock fans were unbearably whiny because the copper transceivers run crazy hot. I swapped the stock fans to these and now all I get is peace and tranquility.
M**G
Very quiet yet still move enough air. Good for 1U switches that come with loud fans
Got these to install in a MikroTik switch that is inside my office area. Worked great! They fit pefectly and the fan header connectors were compatable with the switch. They would probably also work in a 1U server but they may not push enough air for really demanding cooling. Switch and router and lower power 1U devices they are perfect. Also include the standard Noctua goodies in the box. Very nicely made and high quality.
J**F
Excelente! Calidad Noctua.
Calidad Noctua. Para una fuente de poder ITX buscaba un ventilador con alto rendimiento y muy silencioso y Noctua es el ganador. En cuanto a presentacion desde el empaque notas la calidad premium de los materiales, la variedad de accesorios incluidos, la calidad del cable... En cuanto a rendimiento practicamente es imperceptible el ruido para la cantidad de aire que genera. Comparandolo con un Nidec no tiene nada que hacer el noctua, pero Nidec hace ruido y vibra como un mototool, aun a bajas RPM, en entornos industriales donde no importa el ruido Nidec es superior pues tiene mayor rendimiento ya que gira a mas altas RPM, Pero esque el noctua al 100% hace menos ruido que el Nidec al minimo que deja el PWM y no vibra nada, a similares RPM mueven el mismo aire, pero Noctua no se escucha nada, y nidec pues parece un mini taladro. Ni hablar, Noctua no tiene rival en relacion Rendimiento-Silencio.
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