Dynatron A43/A43G CPU cooler 70 mm 2-ball bearing aluminium

Compact 70 mm aluminium cooler for tight builds

The Dynatron A43/A43G combines a 70 x 70 x 15 mm fan with an aluminium heatsink measuring 100.0 x 80.0 x 74.0 mm. It weighs 265 g and ships with thermal grease included. The three-pin power connector suits standard motherboard headers. This cooler targets small-form-factor systems where height and footprint are constrained.

3-pin voltage control defines the operating envelope

Fan speed scales automatically between 3000±10% RPM at 32°C and 5700±10% RPM at 42°C. Airflow rises from 24.35 CFM to 47.17 CFM across the same range. Acoustic output spans 29.03 dBA to 43.76 dBA. The 2-ball bearing supports continuous operation at the higher speed. Without PWM the motherboard can only vary voltage, limiting fine-grained speed curves.

Aluminium fin stack handles moderate thermal loads

At the lower speed the cooler moves 24.35 CFM for lighter workloads. At the higher speed 47.17 CFM provides extra headroom for sustained multi-core tasks. The 74.0 mm overall height fits many compact chassis. Builds requiring higher static pressure or lower noise at equivalent airflow will exceed the practical limits of this single-fan aluminium design.