---
product_id: 81947475
title: "NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey)"
brand: "noctua"
price: "₨616"
currency: SCR
in_stock: true
reviews_count: 6
url: https://www.desertcart.sc/products/81947475-nf-b9-redux-1600-pwm-high-performance-cooling-fan-4
store_origin: SC
region: Seychelles
---

# 1600 RPM max speed Ultra-quiet 17.6 dB(A) >150,000 h MTTF reliability NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey)

**Brand:** noctua
**Price:** ₨616
**Availability:** ✅ In Stock

## Summary

> 🌀 Stay cool, stay ahead — silence and power in perfect harmony.

## Quick Answers

- **What is this?** NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) by noctua
- **How much does it cost?** ₨616 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/81947475-nf-b9-redux-1600-pwm-high-performance-cooling-fan-4)

## 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

- • **Proven Durability:** Built with fibre-glass reinforced PBT and rated for over 150,000 hours mean time to failure—reliability you can trust.
- • **Smart PWM Control:** 4-pin PWM support enables dynamic speed adjustment, balancing power and silence automatically.
- • **Precision Cooling Power:** 92mm high-performance fan delivering optimal airflow at 64.3 CFM for efficient heat dissipation.
- • **Whisper-Quiet Operation:** Engineered for near-silent performance at just 17.6 dB(A), keeping your workspace distraction-free.
- • **Streamlined Redux Design:** Classic Noctua quality meets affordability with a sleek grey finish and versatile accessory compatibility.

## Overview

The Noctua NF-B9 redux-1600 PWM is a premium 92mm cooling fan designed for desktop PCs and NAS devices, featuring a 1600 RPM max speed, ultra-quiet 17.6 dB(A) noise level, and advanced 4-pin PWM control for dynamic airflow management. Crafted from durable fibre-glass reinforced PBT, it offers exceptional reliability with over 150,000 hours MTTF, making it a top choice for professionals seeking efficient, silent cooling solutions.

## Description

Full description not available

## Features

- High performance cooling fan, 92x92x25mm, 12V, 4-pin PWM, max. 1600 RPM, max. 17.6 dB(A), >150,000 h MTTF
- Renowned NF-B9 high-end 92x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users
- Highly optimised low-noise design with outstanding quietness of operation, static pressure and airflow (CFM), ideal for chassis ventilation, cooling fan replacement for NAS and other devices, etc.
- 1600rpm 4-pin PWM version with excellent balance of performance and quietness, supports automatic motherboard speed control (powerful airflow when required, virtually silent at idle)
- Streamlined redux edition: proven Noctua quality at an attractive price point, wide range of optional accessories (anti-vibration mounts, S-ATA adaptors, y-splitters, extension cables, etc.)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 0.98"L x 3.62"W x 3.62"H |
| Brand | Noctua |
| Power Connector Type | 4-Pin |
| Voltage | 12 Volts |
| Cooling Method | Air |
| Compatible Devices | Desktop |
| Noise Level | 17.6 Decibels |
| Material | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 1600 RPM |
| Air Flow Capacity | 64.3 Cubic Meters Per Hour |
| UPC | 842431012401 |
| Global Trade Identification Number | 00842431012401, 04716123315315 |
| Manufacturer | Noctua |
| Number of Items | 1 |
| Series | NF-B9 redux-1600 PWM |
| Item model number | NF-B9 redux-1600 PWM |
| Item Weight | 3.2 ounces |
| Item Dimensions  LxWxH | 3.62 x 3.62 x 0.98 inches |
| Color | Grey |
| ASIN | B00KF7S9F6 |
| Is Discontinued By Manufacturer | No |
| Date First Available | May 24, 2014 |

## Product Details

- **Product Dimensions:** 0.98"L x 3.62"W x 3.62"H
- **Brand:** Noctua
- **Power Connector Type:** 4-Pin
- **Voltage:** 12 Volts
- **Cooling Method:** Air
- **Compatible Devices:** Desktop
- **Noise Level:** 17.6 Decibels
- **Material:** Fibre-glass reinforced PBT
- **Maximum Rotational Speed:** 1600 RPM
- **Air Flow Capacity:** 64.3 Cubic Meters Per Hour

## Images

![NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) - Image 1](https://m.media-amazon.com/images/I/91AR2SjoInL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesomely quiet fan
*by K***D on April 19, 2018*

I set out to make a "nearly" silent PC, in that I didn't want to go fanless, but I wanted it to have the fans running so slowly (or off) during normal operation that it was silent, and it was only during intensive activities that the fans would ramp up. Through that process I ended up using 5 different fan models from 3 different companies and the NF-Bx line from Noctua are my favorite and the best value. The NF-Ax series fans are slightly better, but not so much more so to justify the 50% (or so) increase in cost unless you need the vibration free mounting hardware it comes with.Some cost saving advice: don't buy a Noctua CPU cooler. Buy a Cooler Master CPU cooler (I went with the Hyper T2 as it is the biggest one that fits in a standard case) and take off the Cooler Master fan and buy one of these. For ~$27 combined you get what Noctua wants to charge $60 for. The Cooler Master fan sucks and doesn't allow you to reduce the fan speed below ~30%, so it needs to be replaced if you want to go silent, but the Noctua NF-B9 is exactly the same size fan and it is easy to replace it once you realize you can pull off the rubber pads that obscure the fan screws.Another learning, don't trust that the fan controller on your motherboard is doing everything as it should. First, I had to go into bios and change it to PWM mode as it assumed DC mode for the system fans even though it comes with 4-pin fan headers (DC mode doesn't allow it to spin at nearly as low of a speed). Next, it appeared when I was first testing this fan that the lowest it could go in PWM mode is 13% based on the RPM data the motherboard was providing. But then I noticed the fan was still spinning when I put the PWM at 10%, so I figured the fan wasn't providing good RPM data below 13%. Next I noticed it would stop spinning below 10%, so I assumed that was the lowest the fan would go. Not so on either count! I later hooked up the fan to my GPU and it could both spin the fan and read its speed as low as 5% PWM. So apparently my motherboard has it's limits that it won't go below. For all I know, the fan could go even lower than 5%, but that's the best the GPU fan controller will do. (Luckily, even 13% is slow enough to be silent in almost all scenarios.)But the long and short of it, is that with 4 of these fans (CPU, 2x on GPU and 1 on the rear of the case) and leaving the front of the case fan off unless the system gets hot (trying to save a few bucks and not replace the 12" fan unless I need to) as well as an EVGA gold power supply in "eco mode" I have a truly silent PC, where a pretty sensitive dB meter can not detect it being on. I have to do the test in the middle of the night, because even cars going by outside are detectable. But at 3 AM, it reads 21.1 dB with the PC off and 21.1 dB with it on. My stomach gurgles and the stupid thing goes up to 24 dB or I click the mouse and it goes up to over 30 dB so trust me when I say the dB meter is sensitive enough to detect pretty small readings.To be fair and give a caveat, to keep it silent, the fans are running at 13% on the rear of the case, 10% on the CPU and 5% on the GPU. But that's just enough air flow with the good heatsinks that in normal operation the system temp stays around 40 and both the CPU temp and GPU temps stay in the mid 50's.Build details:Intel Core i3-8100 CPUMSI Z370M Mortar motherboardGigabyte GTX 1050 Ti "Windforce OC" GPU (Note: Gigabyte is the only vendor with a good fan controller on their 1050 GPU. The other companies have junk 2-pin fans.)2 of 4 GB DDR4 2400 Kingston Fury DIMMsSamsung 960 EVO M.2 SSDEVGA 650 GQ PSU in eco mode

### ⭐⭐⭐⭐⭐ Not Overrated at all
*by J***. on September 11, 2025*

I thought that it'd be good not GREAT because it seemed overrated, overhyped, I was wrong lol Product is high quality, quiet and the air flow is huge. Perfect fit in terms of size for most cases, and I can physically feel the out take air being cool for the more intensive games.

### ⭐⭐⭐⭐⭐ Solid performer at a low price
*by B***N on January 21, 2025*

I'm using 7 of these in a server build for hard drive cooling, CPU cooling, and some case cooling. These are easy to install, are quiet at low RPMs, and provide adequate cooling at higher RPMs if needed. Even at max RPM, the fans are audible, but the noise is not whiny like some other fans. I'm using one to cool an AMD EPYC 7302P, which stays under 60C at full load with one of these fans. The fan cable is extremely long, which can be a negative depending on how little room you have for cable management.

## Frequently Bought Together

- Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey)
- Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey)
- Noctua NF-R8 redux-1800 PWM, High Performance Cooling Fan, 4-Pin, 1800 RPM (80mm, Grey)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-20*