Noctua NF-A4x20-PWM 40mm PWM case fan product photo

Noctua NF-A4x20-PWM 40mm 12V PC Case Fan

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Noctua NF-A4x20-PWM 40mm 12V PC Case Fan

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CHF 31.05
Noctua NF-A4x20-PWM 40mm PWM case fan, 12V, 19.2 dBA ultra-quiet operation for compact PC builds.
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Noctua NF-A4x20-PWM – Ultra-Quiet 40mm PWM Case Fan

The Noctua NF-A4x20-PWM is a compact 40mm case fan designed for silent, efficient airflow in tight PC enclosures. With its advanced PWM control and low-noise motor, it delivers reliable cooling without the acoustic disturbance typical of smaller fans.

  • 40mm fan size fits compact cases and tight clearance zones
  • PWM (4-Pin) enables automatic speed regulation based on thermal demand
  • 12V operation ensures compatibility with standard PC power supplies
  • 19.2 dBA noise level keeps the acoustic footprint minimal

Das zeichnet den NF-A4x20-PWM aus

Noctua's NF-A4x20-PWM combines a streamlined 40mm form factor with precision-engineered fan blades and a fluid-dynamically optimized motor. The PWM signal allows the motherboard to adjust rotational speed in real time, balancing cooling performance against noise output across varying thermal loads.

Ideal for...

Users building or maintaining compact ITX, Mini-ITX, or SFF systems where space is at a premium and acoustic comfort matters. Also suited for CPU cooler top-mount or radiator fan positions in small-form-factor cases.

Anwendung von Noctua NF-A4x20-PWM

Mount the fan in a standard 40mm fan mount using the included screws. Connect the 4-pin PWM header to the motherboard for automatic speed control. The fan operates at 12V and draws minimal power, making it suitable for continuous 24/7 use in workstations and home office PCs.

Noctua is a Swiss manufacturer specializing in premium PC cooling components, renowned for its low-noise fan designs and long product lifecycles. The brand is widely respected in the enthusiast and professional segments for combining acoustic performance with reliable, high-quality construction.
BeleuchtungNein
Lüfterdimension40 mm
Schnittstellen4-Pin (PWM)
Betriebsspannung12 V
EAN9010018100105

Frequently Asked Questions

A compact 40mm PWM-controlled case fan designed for silent, efficient cooling in small-form-factor PC enclosures.

Compatible with any PC case or motherboard that supports a standard 40mm fan mount and 4-pin PWM header. Operates at 12V, suitable for standard ATX, Micro-ATX, and Mini-ITX systems.

Fan size: 40mm, voltage: 12V, noise level: 19.2 dBA, connector: 4-pin PWM, weight: 0.088 kg, dimensions: 140x140x25mm mounting pattern.

One Noctua NF-A4x20-PWM fan with mounting screws and a 4-pin PWM cable.

60 months manufacturer warranty. Noctua fans are designed for long-term, maintenance-free operation; clean the blades periodically with a soft, dry cloth to sustain optimal airflow.