The Noctua NF-A12x25 G2 PWM chromax.black is a highly refined 120mm cooling fan engineered with a Sterrox liquid-crystal polymer impeller and an etaPERF motor to deliver 107.3 m3/h of airflow at a quiet 22.5 dB(A). Built to excel on water-cooling radiators and CPU heatsinks, this all-black fan offers quiet operation without sacrificing thermal performance.

Optimised airflow and pressure with Sterrox LCP construction

The impeller is manufactured from Sterrox liquid-crystal polymer (LCP), a material that reduces physical warping over time to ensure structural rigidity. This structural stability helps maintain consistent performance when pushing air through dense radiator fins. The Progressive-Bend impeller geometry features integrated winglets to control vortex formation, helping the fan achieve a high static pressure of 3.14 mm H2O and a maximum airflow of 107.3 m3/h (63.15 CFM) at its full speed of 1800 RPM.

Quiet efficiency via etaPERF motor technology

At the core of this fan is the etaPERF motor, which utilises SupraTorque and Smooth Commutation Drive 2 technologies to maintain consistent rotational speeds under high resistance. Operating on a 4-pin PWM connection, the fan allows for precise speed control down to 0 RPM for quiet passive cooling under low system loads. At maximum speed, the acoustic profile is kept to 22.5 dB(A). For systems prioritising near-silent operation, the included NA-RC7 Low-Noise Adaptor (L.N.A.) caps the speed at 1500 RPM, reducing the maximum noise level to 18.1 dB(A) while still maintaining 87.2 m3/h of airflow and 1.71 mm H2O of static pressure.

Complete installation flexibility and long-term reliability

The chromax.black edition provides a clean, stealthy aesthetic that integrates into any PC build colour scheme. The package includes specialised accessories to optimise performance and vibration dampening:

• NA-AVG1 anti-vibration gasket: Seals the fan against radiators to prevent air pressure loss.
• NA-AV2 anti-vibration mounts: Replaces standard metal screws to isolate the fan from the PC chassis.
• NA-EC1 extension cable: Adds 30cm of reach to the integrated 20cm cable for clean routing in larger cases.
• NA-YC1 Y-splitter: Allows two PWM fans to run off a single motherboard header.

With a premium SSO2 bearing and an MTTF rating exceeding 150,000 hours, this fan is built for continuous, long-term operation, backed by Noctua’s 6-year manufacturer warranty.