Noctua NF-A4x20 PWM premium-quality quiet 40mm fan

DETAILS
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua's AAO frame; the NF-A4x20 is a highly optimised; premium-quality quiet fan in size 40x20mm. The PWM version sports Noctua's custom-designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise Adaptor as well as an OmniJoinTM Adaptor Set for easy connection to proprietary fan headers. Its superb running smoothness; reference-class SSO2 bearing and Noctua's trusted premium quality make it an elite choice for the highest demands.

40x20mm size
Compared to Noctua's award-winning NF-A4x10; the NF-A4x20 is twice as thick; which allows for increased static pressure performance and makes the NF-A4x20 ideal for demanding applications with high flow resistance.

Flow Acceleration Channels
The NF-A4x20 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions; this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.

Custom designed PWM IC with SCD
Supporting fully automatic PWM speed control; the NF-A4x20 PWM uses Noctua's custom designed NE-FD1 PWM IC that integrates Smooth Commutation Drive (SCD) technology. By providing smoother torque impulses; SCD suppresses PWM switching noises and thus makes the fan quieter at low speeds.

The Fine Print

This product is imported from the USA. We do not carry stock in South Africa. Warranties and guarantees are valid only in the USA. In order to obtain a warranty repair you will be required to ship your product to the USA at your cost. We can assist you in the event this happens.

We use only the best couriers to deliver your products safetly. Delivery takes approximately 2-3 weeks. Sometimes there are delays (hey - this is Africa) but we will always keep you informed along the way.

We guarantee authenticity on every product sold. We guarantee delivery in perfect condition. We guarantee you will be happy with everything or we will give you a full refund. That's our promise to you. We have been in the import game for over 10 years. Buy with confidence.

AMAZON