--- product_id: 728787452 title: "Noctua NF-A4x20 PMW Quiet Fan 40mm" brand: "noctua" price: "R1010" currency: ZAR in_stock: true reviews_count: 9 category: "Noctua" url: https://www.desertcart.co.za/products/728787452-noctua-nf-a4x20-pmw-quiet-fan-40mm store_origin: ZA region: South Africa --- # Ultra-quiet 14.9 dB(A) >150,000h MTTF reliability 5000 RPM max speed Noctua NF-A4x20 PMW Quiet Fan 40mm **Brand:** noctua **Price:** R1010 **Availability:** ✅ In Stock ## Summary > 🌀 Small fan, big impact: Quiet power that keeps your tech cool and your workflow smooth. ## Quick Answers - **What is this?** Noctua NF-A4x20 PMW Quiet Fan 40mm by noctua - **How much does it cost?** R1010 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/728787452-noctua-nf-a4x20-pmw-quiet-fan-40mm) ## 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 - • **Built to Last:** Engineered for over 150,000 hours of reliable operation, minimizing downtime and maintenance. - • **Smart PWM Control:** 4-pin PWM lets your system dynamically adjust fan speed for optimal cooling and energy efficiency. - • **Versatile Compatibility:** Perfect fit for 1U servers, NAS, routers, and other compact devices — plus anti-vibration mounts included. - • **Whisper-Quiet Operation:** Experience near-silent performance at just 14.9 dB(A) — your workspace’s new best friend. - • **Precision Cooling Powerhouse:** Turbocharge airflow with up to 9.4 m³/h in a compact 40x40x20mm frame. ## Overview The Noctua NF-A4x20 PMW is a premium 40mm computer fan designed for high-performance cooling in compact devices. Featuring a max speed of 5000 RPM, ultra-quiet 14.9 dB(A) noise levels, and advanced PWM control, it delivers efficient airflow of 9.4 m³/h while maintaining whisper-quiet operation. Built with award-winning design and over 150,000 hours of reliability, it’s ideal for 1U servers, NAS, routers, and other space-constrained environments. ## Description Noctua NF-A4x20 PWM to NF-A4x20 PWM Computer Case Fan (Noctua NF-A4x20 PWM 5000RPM Fan - 40mm) Review: 高回転で静か、風量も十分あるチップセット冷却に使ってます。 Review: Protoolsで使うxMac mini Serverの冷却ファンがクルクルドライヤー並みに爆音で仕事に支障が出るので仕方なしに買いました。 静音・風量に文句なし！非常に素晴らしいですが、値段が・・・通常の4cmファンの20倍って。。 ・・・仕方ないです ## Features - Premium Quiet Fan, 40x40x20mm, 12V, 4-Pin PWM, Max. Up to 5000 RPM 14.9dB(A), >150,000h MTTF - Award winning A-series design Flow acceleration channels and advanced acoustic optimized frame for superior quiet cooling performance - 40x20mm size is ideal for replacing fans of 1U servers and networking and storage devices (routers, switches, NAS, etc.) or other devices such as DVR - 4-pin PWM version for automatic speed control via 4-pin PWM fan header Speed up to 5000 rpm (4400 rpm with included low noise adapter) - With anti-vibration mounts, fan screws, extension cables, Y cables, and OmniJoin adapter sets you can connect your fan to your own fan header ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071W93333 | | Air Flow Capacity | 9.4 Cubic Meters Per Hour | | Amazon Bestseller | #115,162 in Computers ( See Top 100 in Computers ) #908 in Computer Case Fans | | Brand Name | Noctua | | Compatible Devices | Server | | Cooling Method | Air | | Customer Reviews | 4.8 4.8 out of 5 stars (1,908) | | Item Dimensions L x W x H | 40L x 40W x 20H mm | | Manufacturer | Noctua | | Material Type | Fiberglass reinforced PBT | | Maximum Rotational Speed | 5000 RPM | | Noise Level | 14.9 Decibels | | Power Connector Type | 4-Pin | | UPC | 841500110109 | | Unit Count | 1.0 Count | | Voltage | 12 Volts | ## Product Details - **Air Flow Capacity:** 9.4 Cubic Meters Per Hour - **Brand:** Noctua - **Compatible Devices:** Server - **Cooling Method:** Air - **Material:** Fiberglass reinforced PBT - **Maximum Rotational Speed:** 5000 RPM - **Noise Level:** 14.9 Decibels - **Power Connector Type:** 4-Pin - **Product Dimensions:** 40L x 40W x 20H mm - **Voltage:** 12 Volts ## Images ![Noctua NF-A4x20 PMW Quiet Fan 40mm - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.jpg) ![Noctua NF-A4x20 PMW Quiet Fan 40mm - Image 2](https://m.media-amazon.com/images/I/81abh0+LmWL.jpg) ![Noctua NF-A4x20 PMW Quiet Fan 40mm - Image 3](https://m.media-amazon.com/images/I/71ZYfijIyBL.jpg) ![Noctua NF-A4x20 PMW Quiet Fan 40mm - Image 4](https://m.media-amazon.com/images/I/71dP+BWXMRL.jpg) ![Noctua NF-A4x20 PMW Quiet Fan 40mm - Image 5](https://m.media-amazon.com/images/I/61xqdXxj1uL.jpg) ## Questions & Answers **Q: What is the CFM rating of this fan?** A: 5.5 cfm **Q: would anyone recommend this fan for a 3d printer hontend/part cooling fan?** A: Yes, we'd recommend using this fan for your 3d printer. (Please note that this is a 12V DC fan.) **Q: What is de difference between noctua nf-a4x20 pwm and noctua nf-a4x20 flx?** A: one fan is pwm controllable (pwm), the other is not (flx). PWM controlling: https://en.wikipedia.org/wiki/Computer_fan_control **Q: Is a 4-pin two Fan splitter included?** A: yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by ち***ん on July 4, 2025* 高回転で静か、風量も十分あるチップセット冷却に使ってます。 ### ⭐⭐⭐⭐ Review *by B***B on November 26, 2019* Protoolsで使うxMac mini Serverの冷却ファンがクルクルドライヤー並みに爆音で仕事に支障が出るので仕方なしに買いました。 静音・風量に文句なし！非常に素晴らしいですが、値段が・・・通常の4cmファンの20倍って。。 ・・・仕方ないです ### ⭐⭐⭐ Review *by よ***ん on June 8, 2024* 確かに静かですが、羽の面積が少ないので、同じ外形のファンと比べて風量が少なく感じます。 羽面積の大きいファンを回転数を落として使った方が良いかも知れません。 ## Frequently Bought Together - Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown) - Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) - Noctua NF-A8 PWM, Premium Quiet Fan, 4-Pin (80mm, Brown) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/728787452-noctua-nf-a4x20-pmw-quiet-fan-40mm](https://www.desertcart.co.za/products/728787452-noctua-nf-a4x20-pmw-quiet-fan-40mm) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-04-25*