Noctua NF-A12x25r-PWM
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Noctua NF-A12x25r-PWM
The Noctua NF-A12x25r-PWM fan's round frame allows it to fit where a standard square 120mm fan would not be compatible. It maintains a record-breakingly tight tip clearance of just 0.5mm, and uses Sterrox® polymer and a metal-reinforced motor hub for maximum precision. Just like its square counterpart, it features Flow Acceleration Channels, ensuring quiet and efficient cooling. The fan supports fully automatic speed control via PWM and includes a Low-Noise Adaptor to reduce the maximum speed from 2000 to 1700RPM. The SSO2 bearing and Smooth Commutation Drive 2 guarantee smooth operation and a long lifespan, complemented by a rich set of accessories and a 6-year manufacturer's warranty.
Key features of the Noctua NF-A12x25r-PWM fan
- Round frame for space-constrained applications
- Flow Acceleration Channels
- Sterrox® polymer blades increase strength and dampen vibrations
- Smooth Commutation Drive 2 and SSO2 bearing
- Low-Noise Adaptor for reducing maximum speed and ensuring quiet operation
- Stops at 0% PWM for semi-passive cooling
Advanced aerodynamics and quiet operation
The fan's impeller uses Flow Acceleration Channels and an ultra-tight tip clearance, which minimises air turbulence and increases performance. The AAO frame, Stepped Inlet Design and Inner Surface Microstructures further optimise airflow and reduce noise. The fan is fine-tuned for quiet operation, even against the back pressure of heatsinks and radiators.
Built for stability and a long lifespan
The blades are made from Sterrox® polymer and the motor hub is metal-reinforced for high precision. The SSO2 bearing, CNC-milled brass bearing shell and Smooth Commutation Drive 2 ensure stable operation, minimal vibration and long-term fan durability.
PWM control and Low-Noise Adaptor
The fan supports fully automatic speed control via PWM and comes with a Low-Noise Adaptor that reduces the maximum speed from 2000 to 1700RPM for quieter operation. The fan also stops running at 0% PWM, enabling semi-passive cooling and complete silence under low loads.
Fan dimensions:
120×25mm
Fan speed:
450–2000RPM
Supply voltage:
12V
Noise level:
22.6dB
Connector:
4-pin PWM
Weight:
126g
Specifications
Backlight
Fan speed
Technical specification
Dimensions
Pack
Connectors
| Code: | CTnfa12x25rp |
| Warranty: | 72 months |
| Links: | Producer's Website: |
| Manufacturer information |
RASCOM Computerdistribution Ges.m.b.H., Linzer Strasse 237, A-1140, Wien, Rakousko [email protected] 
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