Noctua NF-A6x25 PWM - User Manual

www.noctua.at
Designed in Austria, Noctua’s premium cooling components are internationally renowned for their superb
quietness, exceptional performance and thoroughgoing quality. Having received more than 3000 awards and
recommendations from leading hardware websites and magazines, Noctua’s fans and heatsinks are chosen by
more than a hundred thousand satisfied customers around the globe. sales@noctua.at
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www.noctua.at
geräuschoptimierte Premium-Komponenten
sound-optimised premium components
USER MANUAL
Dear customer,
Congratulations on choosing the Noctua NF-A6x25 PWM. Our fans
are renowned for their impeccable quality and outstanding longevity
and like all Noctua fans, the NF-A6x25 PWM features an MTBF
rating of more than 150.000 hours that’s backed up with our 6 years
manufacturer’s warranty. Each Noctua fan is double checked for
flawless operation by our quality control team before it leaves the
factory and I’m confident that you will be able to sense some of the
research, attention and care we’ve put into making this product.
Enjoy your NF-A6x25 PWM !
Yours sincerely,
Roland Mossig, Noctua CEO
This document includes some instructions
for installing, running and cleaning your
NF-A6x25 PWM. Should you have any
further questions, our support team
(support@noctua.at) will be glad to assist
you at any time.
Please also have a look at the regularly
updated FAQs on our website:
http://www.noctua.at/faqs
This document is also available in
other languages at the following URL:
http://www.noctua.at/manuals
Scan this code to display multi-lingual manuals on your mobile phone:

Summary

Installation

Installation Methods

Describes mounting methods for heatsinks, radiators, and case installations using clips or screws.

Connection

PWM and 3-Pin Header Connection

Explains using the 4-pin PWM connector and 3-pin headers for automatic speed control.

Multi-Fan and Extension Cables

Details using the Y-cable for multiple fans and the extension cable for longer reach.

Low-Noise Adaptor Functionality

Explains the Low-Noise Adaptor for reducing fan speed to 2100rpm.

Cleaning and Maintenance

Regular Fan Cleaning

Advises on regular cleaning methods like dusters, moist tissues, or canned air.

Bearing Sealing and Warranty

Discusses the sealed bearing and its impact on warranty if tampered with.

Warranty and Support

Warranty Period and RMA Service

States the 6-year warranty and direct, fast, and straightforward RMA service.

Contacting the Support Team

Provides contact information for the support team via email for further questions.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The Noctua NF-A6x25 PWM is a premium cooling component designed in Austria, renowned for its superb quietness, exceptional performance, and thoroughgoing quality. This fan is specifically engineered to provide optimal airflow and cooling for various computer components, ensuring stable and efficient operation of your system. It has garnered over 3000 awards and recommendations from leading hardware websites and magazines, making it a trusted choice for over a hundred thousand satisfied customers globally.

Function Description

The primary function of the NF-A6x25 PWM is to provide efficient and quiet cooling. It is designed to be installed on heatsinks, radiators, or as a case fan within a computer chassis. The fan's PWM (Pulse Width Modulation) capability allows for fully automatic speed control, adapting its rotational speed based on the thermal demands of your system. This intelligent control ensures that the fan operates at the optimal speed, balancing cooling performance with noise levels. When connected to a 4-pin PWM fan header on your mainboard, the fan's speed can be dynamically adjusted, preventing unnecessary noise during low-load conditions and ramping up to provide maximum cooling when needed. Even if connected to a 3-pin fan header, the NF-A6x25 PWM will run at full speed, unless the mainboard supports voltage-based speed control, ensuring consistent airflow.

For users with multiple NF-A6x25 PWM fans, the supplied y-cable (NA-YC1) facilitates connecting several fans to a single PWM fan header. This allows your mainboard to control all connected fans at the same speed, simplifying fan management and ensuring synchronized cooling. The fan comes with a short 20cm primary cable, which helps minimize cable clutter in typical applications. For setups requiring a longer reach, a 30cm extension cable (NA-EC1) is also provided. Additionally, the NF-A6x25 PWM includes a Low-Noise Adaptor (NA-RC7). This adaptor allows users to reduce the fan speed from its maximum of 3000rpm down to 2100rpm. It can be used to set the fan to a fixed speed of 2100rpm when speed control is deactivated or to cap the maximum speed at 2100rpm during PWM speed control, offering flexibility in noise reduction.

Usage Features

Installing the NF-A6x25 PWM is straightforward, whether on a heatsink, radiator, or as a case fan. For heatsink or radiator installations, users should utilize the custom mechanism provided by the device (e.g., fan clips, proprietary screws). When installing the fan as a case fan, users have two options: proprietary clip systems, if their case supports them, or the supplied mounting screws and silicone anti-vibration mounts. To use the silicone mounts, first pull them through the mounting holes of the case, then place the fan onto the mounts and pull them through the fan's mounting holes. This method effectively isolates the fan from the case, reducing vibration transmission and contributing to quieter operation.

The fan's design emphasizes longevity and reliability. It features an MTBF (Mean Time Between Failures) rating of over 150,000 hours, backed by a 6-year manufacturer's warranty. Each fan undergoes a double-check for flawless operation by the quality control team before leaving the factory, ensuring that customers receive a product of the highest standard. The premium-grade SSO2 bearing is fully sealed to prevent the ingress of fine dust particles, which is crucial for maintaining flawless operation over many years. This robust construction contributes to the fan's exceptional durability and consistent performance.

Maintenance Features

Regular cleaning is essential to maintain the maximum performance of the NF-A6x25 PWM, as fans inside computer cases tend to accumulate dust over time. Users should clean their fans regularly using a duster, a slightly moist tissue, or canned air. It is important to exercise care and avoid using excessive force to prevent any damage to the fan blades or housing. Vacuum cleaners are not recommended for cleaning, as they can apply excessive force that might harm the fan.

The NF-A6x25 PWM is not designed to be disassembled by the user. Attempting to remove the impeller from the frame will break the sealing of the bearing, which will result in a loss of warranty. This design choice underscores the importance of the factory-sealed SSO2 bearing for the fan's long-term reliability and performance. Should any problems arise with the NF-A6x25 PWM, customers are encouraged to contact Noctua's support team directly. The company is committed to providing the highest possible level of reliability and convenience, offering a direct, fast, and straightforward RMA (Return Merchandise Authorization) service to address any defects or issues that may occur, despite the rigorous quality control measures. Users can also find regularly updated FAQs and multi-lingual manuals on the Noctua website for additional support and information.

Noctua NF-A6x25 PWM Specifications