Noctua launches next-gen NF-A12x25 G2 fans
Noctua has officially revealed its next-generation flagship 120mm fan, the NF-A12x25 G2. Building upon the success of its predecessor, the G2 introduces a refined blade geometry and a new motor design, promising a significant leap in performance-to-noise efficiency.
The NF-A12x25 G2 is the successor to the NF-A12x25 and stands as the 120mm sibling to the already acclaimed 140mm NF-A14x25 G2. Like its forebear, this fan is crafted from Noctua's proprietary Sterrox LCP compound, enabling an incredibly tight tip clearance of just 0.5mm. However, the G2 version pushes the boundaries further with an enhanced progressive bend impeller featuring winglets, flow acceleration channels, and a redesigned centrifugal turbulator hub.




The NF-A12x25 G2 is designed as a versatile all-rounder, delivering superb results across various applications. It performs admirably in low-impedance, airflow-oriented scenarios like case cooling and in high-impedance, static pressure-demanding situations with heatsinks and water cooling radiators. For application-specific optimisation, the fan's Advanced Acoustic Optimisation frame can be paired with the included NA-AVG1 anti-vibration gasket for a tighter seal on radiators. Enthusiasts can opt for the separately sold NA-IS1-12 inlet side spacer frame, which can enhance suction acoustics and improve flow rates in some “pull” configurations.
Noctua's ultra-low-loss etaPERF motor powers this fan, which uses its Smooth Commutation Drive 2 technology to improve energy efficiency and running smoothness. The fans also feature SupraTorque, which allows the fan to leverage additional torque headroom. This ensures it maintains its desired speed even when operating against significant back pressure, leading to superior performance on heatsinks and radiators.
The NF-A12x25 G2 is available in three distinct versions. The standard PWM model offers a maximum speed of 1800 RPM. For those prioritising silence, a quiet LS-PWM variant tops out at 1100 RPM. Lastly, the Sx2-PP combination pack is also offered, bundling two fans with a slight speed offset of +/- ~50 RPM. This subtle offset is particularly beneficial in push-pull operations or multi-fan setups (like case cooling or radiators), helping to mitigate buzzing or other undesirable auditory interactions that can occur when fans run at perfectly synchronised speeds.
Backed by a 6-year manufacturer's warranty, the NF-A12x25 G2 establishes a new benchmark within Noctua's portfolio. The Noctua NF-A12x25 G2 PWM, NF-A12x25 G2 LS-PWM, and NF-A12x25 G2 PWM Sx2-PP are priced at €/$34.90, €/$34.90, and €/$64.90, respectively.
KitGuru says: Although expensive, the first reviews suggest that it's indeed Noctua's best 120mm fan to date. However, other brands have strong alternatives for about the same price.
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