---
product_id: 81947475
title: "Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey)"
brand: "noctua"
price: "$39.44"
currency: USD
in_stock: true
reviews_count: 13
category: "Noctua"
url: https://www.desertcart.us/products/81947475-noctua-nf-b9-redux-1600-pwm-high-performance-cooling-fan
store_origin: US
region: United States of America
---

# 4-pin PWM for smart speed control 1600 RPM max speed Ultra-quiet 17.6 dB noise level Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey)

**Brand:** noctua
**Price:** $39.44
**Availability:** ✅ In Stock

## Summary

> 🌀 Stay cool, stay silent — the fan your setup deserves.

## Quick Answers

- **What is this?** Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey) by noctua
- **How much does it cost?** $39.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/81947475-noctua-nf-b9-redux-1600-pwm-high-performance-cooling-fan)

## 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

- • **Smart PWM Control:** Dynamic 4-pin PWM interface adapts fan speed automatically, balancing peak cooling with minimal noise.
- • **Compact Yet Mighty:** 92x92x25mm size delivers optimized airflow (64.3 m³/h) and static pressure for efficient chassis ventilation.
- • **Proven Reliability:** Over 150,000 hours MTTF and backed by 6-year warranty—engineered for long-lasting, worry-free performance.
- • **Whisper-Quiet Power:** Experience near-silent airflow at just 17.6 dB, perfect for focused work or late-night productivity.
- • **Award-Winning Design:** Join hundreds of thousands of satisfied users who trust Noctua’s legendary quality and innovation.

## Overview

The Noctua NF-B9 redux-1600 PWM is a high-performance 92mm cooling fan featuring a 4-pin PWM connector for precise speed control up to 1600 RPM. Engineered for ultra-quiet operation at just 17.6 dB, it delivers efficient airflow and static pressure ideal for chassis ventilation and NAS devices. With over 150,000 hours mean time to failure and a 6-year warranty, this fan combines proven reliability with award-winning design, making it a top choice for professionals seeking silent, effective cooling.

## Description

Buy Noctua NF-B9 redux-1600 PWM, High Performance Cooling Fan, 4-Pin, 1600 RPM (92mm, Grey): Case Fans - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Awesomely quiet fan - 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 CPU MSI Z370M Mortar motherboard Gigabyte 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 DIMMs Samsung 960 EVO M.2 SSD EVGA 650 GQ PSU in eco mode
Review: Very Quiet Case Fan - Ordered this fan for a new build in a small case. It works well and you can't even tell it's running.

## 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 |
|---------------|-------|
| ASIN | B00KF7S9F6 |
| Air Flow Capacity | 64.3 Cubic Meters Per Hour |
| Best Sellers Rank | #528 in Computer Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.8 out of 5 stars 2,219 Reviews |
| Global Trade Identification Number | 00842431012401, 04716123315315 |
| Item Dimensions L x W x H | 0.98"L x 3.62"W x 3.62"H |
| Item Weight | 0.2 Pounds |
| Manufacturer | Noctua |
| Material Type | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 1600 RPM |
| Model | NF-B9 redux-1600 PWM |
| Noise Level | 17.6 Decibels |
| Number of Items | 1 |
| Part Number | NF-B9 redux-1600 PWM |
| Power Connector Type | 4-Pin |
| Product Dimensions | 0.98"L x 3.62"W x 3.62"H |
| UPC | 842431012401 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 6 year manufacturer’s warranty |

## 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

![Noctua 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 CPU MSI Z370M Mortar motherboard Gigabyte 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 DIMMs Samsung 960 EVO M.2 SSD EVGA 650 GQ PSU in eco mode

### ⭐⭐⭐⭐⭐ Very Quiet Case Fan
*by D***M on June 10, 2026*

Ordered this fan for a new build in a small case. It works well and you can't even tell it's running.

### ⭐⭐⭐⭐⭐ 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.

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-07-30*