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Noctua NF-A12x25 PWM Cabinet Fan

NF-A12x25 PWM 

The NF-A12x25 is a highly optimised next-generation 120mm fan that integrates Noctua’s latest innovations in aerodynamic engineering in order to achieve an unprecedented level of quiet cooling performance. It takes state-of-the-art technologies such as the AAO (Advanced Acoustic Optimisation) frame or Flow Acceleration Channels and combines them with a record tight tip clearance of only 0.5mm, which is made possible by using the novel Sterrox® liquid-crystal polymer (LCP) compound as well as a metal-reinforced motor hub and axis for ultimate precision. Following the approach of Noctua’s A-series, the NF-A12x25 is a true all-rounder that yields superb results in all types of usage, regardless of whether it’s in low-impedance, airflow-oriented applications such as case cooling, or high-impedance, pressure-demanding scenarios such as on heatsinks and watercooling radiators. The 4-pin PWM version supports fully automatic speed control via PWM fan headers and comes with a Low-Noise Adaptor to reduce the maximum speed from 2000 to 1700rpm. Topped off with exceptional running smoothness, Noctua’s reference-class SSO2 bearing, a rich bundle of accessories and 6-year manufacturer’s warranty, the NF-A12x25 is a premium-quality product through and through. Its superior efficiency, cutting-edge construction and pioneering materials make it an elite choice for the most discerning demands. 


Notes and warnings

NF-A12x25 further reading:
Performance comparison to NF-F12 and NF-S12A
Technical backgrounds and manufacturing challenges
Interview with Lars Strömbäck (Noctua CTO)
Which 120mm fan is right for me?


120x120x25 mm

Mounting hole spacing

105x105 mm

Connector & pin-configuration

4-pin PWM

Cable length

20cm + 30cm NA-EC1 extension cable



Blade geometry

A-Series with Flow Acceleration Channels

Frame technology

 AAO (Advanced Acoustic Optimisation)


 Sterrox® LCP

Rotational speed (+/- 10%)

2000 RPM

Rotational speed with L.N.A. (+/- 10%)

1700 RPM

Min. rotational speed (PWM, +/-20%)

450 RPM


102,1 m³/h

Airflow with L.N.A.

84,5 m³/h

Acoustical noise

22,6 dB(A)

Acoustical noise with L.N.A.

18,8 dB(A)

Static pressure

2,34 mm H₂O

Static pressure with L.N.A.

1,65 mm H₂O

Max. input power

1,68 W

Max. input current

0,14 A

Operating voltage

12 V

Voltage PWM signal

5 V


> 150.000 h

Scope of delivery

Low-Noise Adaptor (L.N.A.)

4-pin y-cable

30cm extension cable

NA-AV2 anti-vibration mounts

Anti-vibration gasket for water cooling radiators

Fan screws


6 Years


Price, feature and specifications are subject to change without notice.




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