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

Dual fan set for push-pull and side-by-side usage
Includes two NF-A12x25 G2 PWM fans with a speed offset of approximately ±50rpm to reduce noise in 240/360mm radiators and side-by-side fan configurations.

Speed-offsetting three or more fans
Multiple Sx2-PP sets can be combined to avoid matching fan speeds between adjacent fans in multi-fan setups.

Highly optimised P/Q curve for all applications

Refined aerodynamic design delivers an excellent balance of airflow and static pressure performance across a wide range of applications.

Excellent on-application acoustics
Provides smooth and quiet operation even on heatsinks and radiators.

　Progressive-Bend impeller
Advanced blade geometry improves airflow efficiency and balanced load distribution.

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

Flow Acceleration Channels
Accelerate airflow to improve static pressure and cooling 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, low-expansion material ensures stable and precise operation.

AAO frame
Optimised frame design improves airflow efficiency and acoustics.

Stepped Inlet Design
Enhances intake airflow while reducing noise.

Inner Surface Microstructures
Improve airflow and pressure efficiency by reducing flow separation.

Integrated anti-vibration pads
Minimise vibration transfer for quieter operation.

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

Intake side spacer for suction applications (available separately)
Reduces intake turbulence to improve airflow and acoustics.

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

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

etaPERF™ motor with NE-FD6 PWM IC
Delivers highly efficient and low-noise operation.

SupraTorque™
Maintains stable fan speeds under back pressure for consistent cooling performance.

PWM control with wide speed range
Supports PWM control from 360 to 1800rpm for flexible cooling and noise tuning.

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.

Low-Noise Adaptor

Included L.N.A. reduces the maximum fan speed from 1800rpm to 1500rpm for quieter operation.

Advanced protection features
Includes protection against overvoltage, overcurrent, and reverse polarity.

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

Safety certifications
Complies with major international safety standards and certifications.

6-year manufacturer’s warranty
Rated for over 150,000 hours MTBF 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%)	1800 RPM
Rotational speed with L.N.A. (+/- 10%)	1500 RPM
Airflow	107.3 m³/h
Airflow with L.N.A.	87.2 m³/h
Acoustical noise	22.5 dB(A)
Acoustical noise with L.N.A.	18.1 dB(A)
Static pressure	3.14 mm H₂O
Static pressure with L.N.A.	1.71 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	NF-A12x25 G2 PWM PPA NF-A12x25 G2 PWM PPB 2x NA-RC7 Low-Noise Adaptor (L.N.A.) NA-YC1 4-pin PWM splitter cable 2x NA-EC1 30cm extension cable 8x NA-AV2 anti-vibration mounts 2x NA-AVG1 anti-vibration gasket for water cooling radiators Fan screws
Warranty	6 years

The NF-A12x25 G2 PWM Sx2-PP is a premium dual 120mm fan set based on Noctua’s latest-generation NF-A12x25 G2. Featuring a Sterrox® LCP impeller, Progressive Bend blade design, Flow Acceleration Channels, Centrifugal Turbulator hub, and an ultra-tight 0.5mm tip clearance, it delivers outstanding cooling performance with exceptionally low noise levels.

Designed as a true all-rounder, it performs equally well in PC case cooling, heatsinks, and water-cooling radiators with an excellent balance of airflow and static pressure.

The Sx2-PP set includes two fans with a speed offset of approximately ±50rpm to reduce vibration noise and humming sounds in push-pull and side-by-side configurations, resulting in smoother and quieter operation.

Combined with the etaPERF™ motor, SupraTorque™ technology, premium SSO2 bearing, and a 6-year manufacturer’s warranty, the NF-A12x25 G2 PWM Sx2-PP is a flagship-class cooling solution for high-performance quiet PC builds.