Fan Noctua NF-A14x25 G2 PWM 140 mm 1500 RPM SSO2 bearing 4-pin PWM Beige

The Noctua NF-A14x25 G2 PWM is a 140 mm square-frame cooling fan designed for efficient, quiet operation in a wide range of PC applications. Constructed with Sterrox® LCP and featuring a highly optimised impeller, flow acceleration channels and a 0.7 mm tip clearance, the fan targets improved cooling performance on cases, heatsinks and water-cooling radiators. The PWM model supports automatic speed control and includes a Low-Noise Adaptor to reduce maximum speed from 1500 to 1250 RPM. It comes pre-fitted with an NA-AVG2-LR anti-vibration gasket for tighter radiator sealing and is compatible with optional inlet spacers for improved intake acoustics and flow.

Advantages

The NF-A14x25 G2 delivers enhanced aerodynamic efficiency through Progressive-Bend blades with winglets, Flow Acceleration Channels and a Centrifugal Turbulator hub, resulting in higher static pressure and airflow with low noise. Its etaPERF™ ultra-low-loss motor combined with Smooth Commutation Drive 2 and SupraTorque™ technology provides improved energy efficiency, steady speed under back pressure and extended torque headroom for demanding radiator and heatsink use. The SSO2 bearing and comprehensive accessory bundle support long-term reliability and straightforward installation.

Suitable for

• Case ventilation in desktop computers
• Cooling airflows across CPU/GPU heatsinks
• Push/pull configurations on water-cooling radiators
• Quiet systems requiring PWM speed control

Key specifications

• Model: Noctua NF-A14x25 G2 PWM (MPN NF-A14x25 G2 PWM)
• Size: 140 mm square-frame
• Max speed: 1500 RPM (Low-Noise Adaptor reduces to 1250 RPM)
• Airflow: 155.6 m³/h
• Acoustics: 24.8 dB(A)
• Bearing: SSO2 (self-stabilising oil-pressure bearing)
• Control: 4-pin PWM
• Colour: Beige
• Accessories: NA-AVG2-LR anti-vibration gasket pre-installed, Low-Noise Adaptor, mounting hardware
• EAN: 9010018100617

How to use

Mount the fan using the supplied screws or anti-vibration mounts, ensuring the NA-AVG2-LR gasket is correctly seated if installing on a radiator to improve the seal. Connect to a 4-pin PWM fan header on the motherboard or fan controller to enable automatic speed regulation. Use the Low-Noise Adaptor if a lower maximum speed and reduced noise are required. Follow standard safety precautions: power off the system before installation and avoid obstructing the impeller.

Recommendations

The fan is a versatile all-rounder: use it for case intake/exhaust, direct heatsink cooling, or in push/pull radiator setups. For best acoustic results in constrained intakes, pair the fan with the optional NA-IS1-14 inlet spacer and configure PWM curves in the motherboard firmware to balance airflow and noise.