　Next-generation performance
Refined blade geometry and a new motor design improve both cooling performance and noise efficiency.

　Highly optimised P/Q curve for all applications
Excellent balance of airflow and static pressure performance for a wide range of applications.

　Excellent on-application acoustics
Optimised for low-noise operation on heatsinks and radiators.

　Progressive-Bend impeller
Advanced curved blade design improves airflow efficiency and acoustic performance.

　Centrifugal Turbulator hub
Optimises airflow distribution for improved cooling efficiency and lower noise.

　Flow Acceleration Channels
Accelerate airflow to improve cooling efficiency and static pressure performance.

　Winglets
Reduce turbulence at the blade tips for quieter operation.

　Ultra-tight tip clearance
Precision 0.5mm tip clearance enhances pressure and cooling efficiency.

　Sterrox® liquid-crystal polymer compound
High-rigidity material ensures precise and stable fan operation.

　AAO frame
Noctua’s advanced frame design optimises airflow and acoustic performance.

　Stepped Inlet Design
Improves intake airflow and reduces intake noise.

　Inner Surface Microstructures
Reduce flow separation for improved airflow efficiency.

　Integrated anti-vibration pads
Minimise vibration transfer and reduce operating noise.

　Anti-vibration gasket for water cooling radiators
Reduces vibration and air leakage for improved radiator performance.

　Intake side spacer for suction applications (available separately)
Optional spacer reduces intake turbulence and improves acoustics.

　SSO2 bearing
Premium bearing technology for quiet operation and long-term reliability.

　Metal bearing shell
Ensures high manufacturing precision and long-term stability.

　etaPERF™ motor with NE-FD6 PWM IC
High-efficiency motor design with ultra-low noise operation.

　Ultra-quiet low-speed version with PWM
Low-speed PWM model designed for ultra-quiet cooling setups.

　Stops at 0% PWM
Supports semi-passive cooling by stopping the fan at 0% PWM duty cycle.

　Smooth Commutation Drive 2
Reduces motor noise and ensures smoother fan operation.

　Extensive cabling options
Includes extension and PWM Y-cables for flexible installation.

　Advanced protection features
Built-in protection against overvoltage, overcurrent, and reverse polarity.

　Safety certifications
Complies with major international safety standards and certifications.

　6-year manufacturer’s warranty
Rated for over 150,000 hours MTTF and backed by a 6-year warranty.

FAN Specification

Size	120x120x25 mm
Mounting hole spacing	105x105 mm
Connector & pin-configuration	4-pin PWM
Cable length	20cm + 30cm NA-EC1 extension cable
Bearing	SSO2
Blade geometry	Progressive-Bend impeller
Frame technology	AAO (Advanced Acoustic Optimisation)
Material	Sterrox® LCP
Rotational speed (+/- 10%)	1100 RPM
Rotational speed with L.N.A. (+/- 10%)	850 RPM
Airflow	66.3 m³/h
Airflow with L.N.A.	45.2 m³/h
Acoustical noise	11.8 dB(A)
Acoustical noise with L.N.A.	7.8 dB(A)
Static pressure	1.08 mm H₂O
Static pressure with L.N.A.	0.56 mm H₂O
Input power (max.)	1.8 W
Max. input current	0.15 A
Operating voltage	12 V
MTTF	> 150,000 h
Scope of delivery	NA-RC8 Low-Noise Adaptor (L.N.A.) NA-YC1 4-pin PWM splitter cable NA-EC1 30cm extension cable 4x NA-AV2 anti-vibration mounts NA-AVG1 anti-vibration gasket for water cooling radiators Fan screws
Warranty	6 years

The NF-A12x25 G2 is Noctua’s latest-generation 120mm premium quiet fan, developed as the successor to the award-winning NF-A12x25.

It features a Sterrox® liquid-crystal polymer impeller with advanced technologies such as the Progressive Bend blade design, Flow Acceleration Channels, and the Centrifugal Turbulator hub. Combined with an ultra-tight blade tip clearance of just 0.5mm, these innovations deliver outstanding cooling performance with exceptionally low noise levels.

Designed as a true all-rounder, the NF-A12x25 G2 excels in both airflow-oriented applications such as case cooling and high static pressure environments including heatsinks and water-cooling radiators.

The fan also incorporates Noctua’s AAO frame and included anti-vibration gasket for improved acoustics and sealing performance. In addition, the etaPERF™ motor, SupraTorque™ technology, and Smooth Commutation Drive 2 ensure highly efficient, smooth, and stable operation.

Equipped with Noctua’s premium-grade SSO2 bearing, comprehensive accessories, and a 6-year manufacturer’s warranty, the NF-A12x25 G2 represents Noctua’s flagship-class 120mm cooling solution.