---
product_id: 256239121
title: "Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)"
brand: "noctua"
price: "S/.187"
currency: PEN
in_stock: true
reviews_count: 8
url: https://www.desertcart.pe/products/256239121-noctua-nf-a4x20-flx-computer-case-fan-computer-cooling-components
store_origin: PE
region: Peru
---

# 4400 RPM max speed Compact 40x40x20 mm size Ultra-quiet 14.9 dB noise level Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)

**Brand:** noctua
**Price:** S/.187
**Availability:** ✅ In Stock

## Summary

> 🌀 Stay cool, stay ahead — the silent powerhouse your rig deserves!

## Quick Answers

- **What is this?** Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) by noctua
- **How much does it cost?** S/.187 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/256239121-noctua-nf-a4x20-flx-computer-case-fan-computer-cooling-components)

## Best For

- noctua enthusiasts

## Why This Product

- Trusted noctua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Versatile:** Slim 40x40x20 mm fits perfectly in 1U servers, routers, and NAS devices
- • **Award-Winning Design:** Flow acceleration channels and acoustic frame deliver superior, reliable cooling
- • **Precision Cooling Power:** Blazing 4400 RPM for optimal airflow in tight spaces
- • **Whisper-Quiet Operation:** Advanced acoustic design keeps noise under 15 dB—work in peace
- • **Complete Installation Kit:** Includes anti-vibration mounts, screws, extension cable & Omnijoin adapter for seamless setup

## Overview

The Noctua NF-A4x20 FLX is a premium 40mm computer case fan engineered for high-performance cooling in compact environments. With a maximum speed of 4400 RPM and ultra-quiet operation at just 14.9 dB, it’s ideal for 1U servers, routers, NAS, and other network devices. Its award-winning aerodynamic design ensures efficient airflow while minimizing noise, and it comes with a full accessory kit for easy, vibration-free installation.

## Description

Noctua NF-A4x20 FLX - NF-A4x20 FLX Computer case Fan (NF-A4x20 FLX Fan - 40mm - Warranty: 1Y)

## Features

- Noctua Nf A4X20 Flx Computer Case Fan Computer Cooling Components Computer Case Fan 4Cm 3700Rpm 5000Rpm 4400Rpm
- Award Winning A Series Design With Flow Acceleration Channels And Advanced Acoustic Optimization Frame For Superior, Quiet Cooling Performance
- Brand: Noctua
- 40X20Mm Size, Ideal For 1U Applications Or Replacing Fans In Network And Storage Devices, Routers, Switches, Nas, Etc. Or Other Devices Such As Dvr.
- Includes Anti Vibration Mounts, Fan Screws, Extension Cable, And Omnijoin Adapter Set To Connect The Fan To Proprietary Fan Strips.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Air Flow Capacity | 9.4 Cubic Meters Per Hour |
| Asin | B072JK9GX6 |
| Best Sellers Rank | #38,401 in Computers (See Top 100 in Computers) #279 in Computer Case Fans |
| Brand Name | Noctua |
| Compatible Devices | Desktop, Server, Router, Switch |
| Cooling Method | Air |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,381) 4.8 out of 5 stars |
| 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 |
| Unit Count | 1 Count |
| Upc | 841500110116 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Noctua
- **Cooling method:** Air
- **Power connector type:** 3-Pin
- **Product dimensions:** 40L x 40W x 20H millimeters
- **Voltage:** 12 Volts

## Images

![Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 2](https://m.media-amazon.com/images/I/81abh0+LmWL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 3](https://m.media-amazon.com/images/I/71NYZ3JQcOL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 4](https://m.media-amazon.com/images/I/71Ywc8LceeL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Computer Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 5](https://m.media-amazon.com/images/I/61xqdXxj1uL.jpg)

## Questions & Answers

**Q: Whats the cfm of this fan?**
A: The output, converted from 9.4 m3/h is just 5.5 cfm, very low indeed.

**Q: 14.9dba at what speed?**
A: 5000rpm.

**Q: How many dB is this fan?**
A: 14.9db(a)

**Q: What is the mtbf. How many hours of life can I expect from one of these?**
A: Not sure about the Mtbf, but i purchased 2 of this in Jan 2020, and they have been running 24/7 till now with no problems. Installed them in my 2 poe+ switches

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice cooler for sff aystem
*by  on Reviewed in the United Arab Emirates 28 March 2024*

Its nice for the small pc

### ⭐⭐⭐⭐⭐ Silence
*by  on Reviewed in the United Arab Emirates 9 September 2020*

After replacement in switch, it became silent

### ⭐⭐⭐⭐⭐ High quality
*by  on Reviewed in the United Arab Emirates 14 October 2020*

Very good performance and quiet. I'm using it on 3D printer to cool E3D V6 hotend.

## Frequently Bought Together

- Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)
- Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)
- Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-09-08*