Noctua NF-A12x25 G2 LS-PWM 120mm Fan - Ultra-Quiet Cooling

Our review of the Noctua NF-A12x25 G2 LS-PWM finds it best suited to users who want the quietest possible cooling without sacrificing adaptability. Built around a next-gen 120x25mm design and premium materials, this fan delivers exceptional noise control and steady airflow or static pressure for PC cases, CPU coolers and radiators. For anyone running semi-passive systems or aiming for whisper-quiet operation with PWM control, the fans 1100rpm low-speed variant is a clear, practical choice.

Key Features

• Next-gen 120x25mm design: Balances high airflow and high static pressure so the fan can be used interchangeably in cases, on CPU coolers and on radiators with consistent performance.
• Sterrox LCP construction: The reinforced impeller and ultra-tight tip clearance reduce turbulence and improve efficiency for quieter operation.
• Advanced aerodynamic elements: Progressive Bend impeller, winglets, Centrifugal Turbulator and Flow Acceleration Channels work together to minimize noise while preserving cooling capacity.
• Low-speed PWM control: Tops out at 1100rpm and supports semi-passive setups where the fan can stop at 0% PWM, making it ideal for silent-running builds.
• Complete mounting accessories: Includes anti-vibration mounts, a 12cm gasket for tighter radiator seals, screws, Low-Noise Adaptor, extension and splitter cable for versatile installation.
• Durable SSO2 bearing: Premium-grade bearing with long MTTF and multiple safety protections offers reliable, long-term operation.

Who It's For

The NF-A12x25 G2 LS-PWM is aimed at PC builders and system maintainers who prioritize extremely low noise in desktops used for media, home office, or low-to-moderate gaming where passive or near-passive operation is preferred. It suits radiator mounting and case intake/exhaust roles thanks to its balanced design and included gasket and mounts.

This fan is less appropriate for users who need maximum raw airflow at high RPMs for extreme overclock cooling, since the LS-PWM version is limited to 1100rpm by design. If absolute top-end static pressure or very high CFM at high speed is the primary goal, consider a higher-speed variant instead.

Pros & Cons

Pros

• Exceptionally quiet at low RPM while still providing useful airflow and static pressure for radiators and cases.
• Thoughtful aerodynamic engineering and Sterrox LCP construction for improved efficiency and lower turbulence.
• Well-rounded accessory kit including vibration mounts, radiator gasket, cables and Low-Noise Adaptor for flexible installs.
• High reliability from a premium SSO2 bearing and protections for polarity, over voltage and short-circuits.

Cons

• The 1100rpm maximum makes it a choice for low-noise builds rather than those demanding the highest possible cooling at high fan speeds.

Specifications

Our Verdict

The NF-A12x25 G2 LS-PWM is a premium 120mm fan that delivers outstanding quiet performance and flexible mounting for cases, CPU coolers and radiators. It represents good value for builders who prioritize silence and reliability over maximum RPM, thanks to advanced aerodynamic design, built-in accessories and durable bearings.

Frequently Asked Questions

Will this fan work on a radiator?
Yes, the fans 120x25mm design and included 12cm anti-vibration gasket make it suitable for radiator mounting with good static pressure characteristics.

Can it be used in semi-passive systems?
Yes, the low-speed PWM version stops at 0% PWM, which is ideal for semi-passive or low-noise configurations.

Are vibration mounts included?
Yes, anti-vibration mounts are included along with screws and a gasket for tighter seals on radiators.