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Noctua NF-A12X25 G2 LS-PWM Quiet 120mm 4 Pin Low Speed PWM Case Fan
Case fan
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Noctua NF-A12X25 G2 LS-PWM

Quiet 120mm 4 Pin Low Speed PWM Case Fan

Last price 36€95
Holy Moly!
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  • Overview

  • Specifications

  • Customer review

Overview

New-generation silent fan

The Noctua NF-A12x25 G2 LS-PWM is a 120 mm fan designed to provide quiet, efficient cooling as the successor to the acclaimed NF-A12. It features an optimised Progressive-Bend impeller with winglets to improve airflow. The frame featuresAdvanced Acoustic Optimisation (AAO) to reduce vibration and noise. The LS-PWM version is ideal for semi-passive and ultra-quiet configurations.

Reference fan

  • Exceptional acoustic performance: The NF-A12x25 G2 LS-PWM has been carefully tuned for acoustically optimised performance. Its frequency curve is pleasant to the ear and it generates a low sound pressure level (SPL) compared with the resistance.
  • The NF-A12x25 G2 LS-PWM features a Progressive-Bend impeller with Flow Acceleration Channels and winglets. Its 9 blades, which tend to face backwards on the hub side, curve progressively outwards at the tip. Combined with the Centrifugal Turbulator hub, this design allows more air to be conveyed to the blade tip (the zone of maximum efficiency) and also ensures that the load is distributed more evenly along the blade profile.
  • As a turbulence generator, the Centrifugal Turbulator hub and its specific design improve the cohesion of flows in the hub area. In addition, its movement exerts a centrifugal force that moves the air away from the hub, and therefore away from the area that is less efficient given the low rotation speeds. The air is thus channelled to the most efficient zone at the tip of the blade, increasing overall performance.
  • The NF-A12x25 G2 LS-PWM turbine is fitted with flow ducts on the suction side of the fan. The flow acceleration generated at the tips of the blades creates a more massive, less dispersed suction, thus increasing efficiency while reducing noise disturbance.

Ultra-quiet

  • Noctua's AAO (Advanced Acoustic Optimisation) frames are equipped with anti-vibration silent blocks and benefit from exclusive optimisations that push back the limits of performance and silence.
  • To avoid problems of excessive load, the NF-A12x25 G2 LS-PWM is supplied with a special anti-vibration gasket (pre-installed) and, for installation on the air outlet side, anti-vibration pads with load-reducing structures.
  • Integrated anti-vibration mounts, made from extra-soft silicone, reduce the transmission of micro-vibrations while ensuring perfect compatibility with fan mounting systems and fan clips.
  • Protected against reverse polarity, overvoltage and overcurrent (short circuits), the fan is suitable for use in harsh electrical environments. In addition, its ultra-low electromagnetic emissions make this fan an ideal solution for interference-sensitive applications.
  • The NF-A12x25 is supplied with a NA-AVG2 silicone gasket that can be used when installing the fan on a watercooling heatsink or any other application requiring minimum leakage. The gasket reduces micro-vibrations and air leakage between the fan and the radiator for optimum cooling performance.
Specifications
Select your criteria

General information

Product name

 Noctua NF-A12X25 G2 LS-PWM

Brand

 Noctua

Model

 NF-A12X25 G2 LS-PWM

Technical specifications

Use

 Case

Luminous

 No

Connector(s)

 4-pin Female

Reverse (inverted blades)

 No

PWM

 Yes

Cooling type

 Active (fansink)

Fan diameter

 120 mm

Max sound level

 11.8 dB

Maximum rotation speed

 1100 RPM

Max airflow

 66.3 m³/h

Pressure

 1.08 mm/H2O

Use

 Office
Gaming

Bundle

 No

Warranties

Commercial warranty
Seller 2 years

Legal warranty
See terms & conditions

Safety Information

Responsible person

 Noctua SAS

Postal address

 62 Boulevard de l’Hôpital 75013 Paris France

Electronic Address
Click here

See all Noctua products

See Noctua Case fan section

Product referenced on 25 Jul 2025

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