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Black aluminium CPU cooler with 70 mm two-ball-bearing fan and thermal grease

Dynatron

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

SKU CH-JNCW-WNA9F MPN A43/A43G

A 70 mm 2-ball bearing fan spins at 3000 RPM at 32 °C and 5700 RPM at 42 °C, pushing up to 47.17 CFM through an aluminium heatsink

  • Fan size70 mm
  • Bearing design2 Ball
  • Rotational speed32 °C: 3000±10%RPM 42 °C: 5700±10%RPM
  • Airflow rate32 °C: 24.35 CFM 42 °C: 47.17 CFM
  • Operating noise29.03-43.76 dBA
  • Power input connector3 Pin
  • Quiet operation at low load with 29.03 dBA noise
  • Higher airflow at increased temperature reaching 47.17 CFM
  • 2 ball bearing fan for durable performance
  • Compact 70 mm fan fits tight spaces
  • Aluminium heatsink dissipates heat efficiently

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.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 90% of the 1,559 comparable items (median $19.99).
Fan size 70 mm
Lower than about 55% of the 812 comparable items (median 80 mm).

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Specifications

Product
Brand nameDynatron
Model nameA43/A43G
Product colorBlack
Product typeFan & Heatsinks
Performance
Rotational speed32 °C: 3000±10%RPM
42 °C: 5700±10%RPM
Airflow rate32 °C: 24.35 CFM
42 °C: 47.17 CFM
Power
Power input connector3 Pin
Size & build
Fan size70 mm
Bearing design2 Ball
Cooler materialAluminum
Heatsink dimensionsOverall Dimension: 100.0 × 80.0 × 74.0 mm
Product weight265g
Shipping weight0.60 kg
Package size51 × 51 × 51 mm
In the box
In the boxCPU Cooler
Thermal Grease
Environment & compliance
Operating noise29.03-43.76 dBA

Questions about this item

Which variant of the A43/A43G should I pick for a compact build?

The single model measures 100.0 x 80.0 x 74.0 mm overall and weighs 265 g, fitting low-profile cases with a 70 mm fan footprint.

What does the 5700 RPM figure mean once the cooler is installed?

At 42 °C the fan spins up to 5700±10 % RPM, delivering 47.17 CFM at 43.76 dBA for higher thermal loads.

What does the 3-pin connector cap in practice?

The 3-pin header supplies voltage control only, so fan speed varies with the motherboard's DC regulation rather than PWM duty cycles.

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