Noctua (NF-A12x25-ULN) 120mm 3-pin 1200rpm Silent Case Fan View full size

Noctua (NF-A12x25-ULN) 120mm 3-pin 1200rpm Silent Case Fan

 Noctua (NF-A12x25-ULN) 120mm 3-pin 1200rpm Silent Case Fan

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Noctua (NF-A12x25-ULN) 120mm 3-pin 1200rpm Silent Case Fan



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 3-pin ULN version provides super-slow 1200/900rpm speed settings for ultra-low-noise applications and highly noise-sensitive users who demand near-silent acoustics. 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.


Fan Specification


120x120x25 mm


Mounting hole spacing

105x105 mm








Blade Geometry

A-Series with Flow Acceleration Channels


Frame Technology

AAO (Advanced Acoustic Optimisation)




Sterrox® LCP

Rotational Speed (+/- 10%)

1200 RPM


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

900 RPM



55,7 m³/h


Airflow with U.L.N.A.

39,4 m³/h


Acoustical Noise

12,1 dB(A)


Acoustical Noise with U.L.N.A.

7,6 dB(A)

Static Pressure

0,82 mm H₂O

Static Pressure with U.L.N.A.

0,41 mm H₂O


Max. Input Power

0,6 W


Max. Input Current

0,05 A



12 V



> 150.000 h


Scope of delivery



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

3:4-pin power supply adaptor

30cm extension cable

NA-AV2 anti-vibration mounts

Anti-vibration gasket for water cooling radiators

Fan screws


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