The Noctua NF-A12x25r PWM is a round-frame variant of the acclaimed NF-A12x25 fan, engineered for applications requiring 120mm fans in 140mm mounting spaces, such as certain all-in-one (AIO) liquid coolers or CPU heatsinks with round-frame clearance needs. With a focus on acoustic excellence and pressure performance, it combines Sterrox® liquid-crystal polymer construction, advanced flow acceleration features, and SSO2 bearings to deliver premium cooling in a compact, acoustically optimized form.

Key Features:

• Round-frame design compatible with select heatsinks and AIO radiators

• Sterrox® LCP impeller for minimal vibration and blade deflection

• PWM support for automatic fan speed control from 450–2000 RPM

• Optimized for both airflow and static pressure in space-constrained builds

• Ultra-low noise and outstanding thermal efficiency under all loads

Specifications:

• Dimensions: 120 x 120 x 25 mm (round frame)

• Weight: 200 g

• Materials: Sterrox® liquid-crystal polymer (impeller), fiberglass-reinforced PBT (frame)

• Connectivity / Compatibility: 4-pin PWM, 12V DC

• Rotational Speed: 450 – 2000 RPM ±10%

• Airflow: 102.1 m³/h

• Static Pressure: 2.34 mm H₂O

• Acoustic Noise: 22.6 dB(A)

• Bearing Type: SSO2

• Input Power: 1.2 W

• Voltage Range: 12V ±10%

• MTTF: >150.000 h

Additional Features:

• Rubber anti-vibration pads pre-installed (color-customizable via chromax accessories)

• Compatible with select watercooling radiators and tight heatsink clearances

• Smooth Commutation Drive 2 for reduced torque switching noise

• Ideal for upgrading older round-frame 120mm fans in performance-focused builds

Customer Benefits:
Offers cutting-edge performance in compact builds or cooling devices that require round-frame fans. Exceptional for users upgrading OEM fans in AIO coolers or replacing aging round-mount 120mm models with premium Noctua quality and PWM control.

What’s in the Box:

• NF-A12x25r PWM fan

• 30cm Extension cable

• Low-Noise Adapter (L.N.A.)

• 4x Anti-vibration mounts

• 4x Standard fan screws

• User Manual

Compliance:
This product complies with CE, RoHS, and REACH regulations for electrical safety and environmental standards. Designed to meet Noctua’s industrial-grade reliability and performance benchmarks.

Manufacturer Contact:
Company Name: Noctua GmbH
Address: Josef-Preis-Allee 18, 8020 Graz, Austria
Email: support(at)noctua(dot)at