Noctua NF-A12x25 G2 LS-PWM 120mm Quiet PC Fan – 1100 RPM – Sterrox LCP – NF-A12X25 G2 LS-PWM

Unrivaled Quiet Cooling Performance

The Noctua NF-A12x25 G2 LS-PWM represents the pinnacle of fan engineering, serving as the second-generation successor to the iconic original. Designed for the most discerning users, this premium 120mm fan leverages cutting-edge materials and sophisticated aerodynamics to deliver unprecedented quiet cooling. Whether you are building a semi-passive silent workstation or a high-performance system requiring PWM control, this fan excels in both low-impedance case cooling and high-impedance static pressure applications, such as heatsinks and water cooling radiators.

State-of-the-Art Aerodynamic Engineering

Constructed from high-performance Sterrox Liquid Crystal Polymer (LCP), the impeller maintains an ultra-tight tip clearance of just 0.5mm, significantly reducing back-pressure leakage. The fan integrates Noctua’s advanced features, including the Progressive Bend impeller with winglets and Flow Acceleration Channels, ensuring smooth airflow. The new Centrifugal Turbulator hub actively improves flow attachment in the critical hub region, redistributing air towards the high-efficiency outer zones to maximize total output.

Advanced Motor and Bearing Technology

At the heart of the NF-A12x25 G2 LS-PWM lies the super-low-loss etaPERF motor with Smooth Commutation Drive 2 technology. This ensures exceptional energy efficiency and virtually silent operation. Complementing this is the reference-class SSO2 bearing system, which places the rear magnet closer to the axis for enhanced stabilization and durability, guaranteeing an MTTF exceeding 150,000 hours. The result is a fan that provides consistent, reliable performance for years to come.

Precision PWM Control and Acoustics

Tailored for the silent-enthusiast, this low-speed PWM version is optimized for near-silent acoustics, producing a maximum noise level of only 11.8 dB(A) at 1100 RPM. When paired with the included Low-Noise Adaptor, this can be further reduced to an ultra-quiet 7.8 dB(A). The PWM support allows for advanced acoustic fine-tuning, making it the ideal choice for semi-passive setups where fans can be commanded to stop at 0% PWM.

Versatile Installation and Accessories

Noctua ensures a seamless installation experience by providing a rich bundle of premium accessories. Each unit includes anti-vibration mounts, a 12cm anti-vibration gasket for a superior seal on water cooling radiators, a splitter cable for dual fan setups, and an extension cable for flexible cable management. The Advanced Acoustic Optimisation (AAO) frame design allows for easy integration into any PC build, providing a robust and versatile cooling solution that sets a new standard for quality and reliability.