FrostyTech posted a review on the Dynatron Genius G950 Heatsink

Dynatron's Genius G950 heatsink stands a modest 148mm tall and weighs 795 grams. The heatsink makes use of two independent array's of aluminum fins, positioned fore and aft of a single 120mm PWM inset fan. The fan spins by default at a speed of 1600RPM, but will run fairly effectively at 1000RPM as well. Four 6mm diameter heatpipes support the aluminum fins, which have received a simple dip along a center 64mm stretch to enhance airflow, according to the manufacturer.

Dynatron Genius G950 Heatsink Review