Computer case fan Noctua NF-A12x25 G2 PWM 120mm, 12 V, 1800 RPM, 107.3 m³/h, SSO bearing, beige, 25 mm

The Noctua NF-A12x25 G2 is a second-generation 120 mm cooling fan made from Sterrox® LCP with a minimal tip clearance of 0.5 mm. It features an optimised Progressive-Bend impeller with winglets, Flow Acceleration Channels and a new Centrifugal Turbulator Hub to improve airflow and static pressure compared with the original NF-A12x25. Designed as a versatile solution, the NF-A12x25 G2 performs well in low-impedance case airflow scenarios and in high-impedance applications such as heatsinks and water-cooling radiators. The 4-pin PWM model supports automatic speed control and is supplied with a Low-Noise Adaptor to limit maximum speed from 1800 to 1500 rpm.

Advantages

The fan delivers improved performance on heatsinks and radiators due to aerodynamic innovations and the SupraTorque™ feature, which provides additional torque headroom to maintain speed against back pressure. Its ultra-low-loss etaPERF™ motor with Smooth Commutation Drive 2 increases energy efficiency and smoothness, while the SSO2 bearing ensures long-term reliability. The AAO frame can be combined with the included NA-AVG1 anti-vibration gasket for a tighter seal on radiators or with the optional NA-IS1-12 inlet spacer to improve suction acoustics and flow in pull configurations.

Key specifications

• Model: Noctua NF-A12x25 G2 (120 mm)
• Material: Sterrox® LCP
• Tip clearance: 0.5 mm
• Motor: etaPERF™ with Smooth Commutation Drive 2
• Bearing: SSO2 (self-stabilising oil-pressure)
• Control: 4-pin PWM (automatic speed control)
• Included accessory: Low-Noise Adaptor (limits max speed 1800 → 1500 rpm)
• Additional accessories: NA-AVG1 anti-vibration gasket included; NA-IS1-12 inlet spacer optional
• Colour: Beige
• Quantity: 1 pc

How to use

Install the fan in your case, on a heatsink, or on a radiator using the supplied screws and optional gasket or spacer as required. Connect the 4-pin connector to a motherboard PWM fan header to enable automatic speed control. Use the Low-Noise Adaptor if you prefer a lower maximum speed and reduced noise. For radiator installations, fit the NA-AVG1 gasket for a tighter seal or install the NA-IS1-12 inlet spacer when using pull configurations to improve suction acoustics and flow.

Рекомендации

For best results on heatsinks and radiators, ensure the fan is mounted with correct orientation for push or pull airflow and pair it with a compatible PWM header for automatic speed control. Use the included gasket or the optional inlet spacer when sealing or optimising suction acoustics on radiators.