FrostyTech posted a review on the Verax Helado PWM-T Low Noise Heatsink

The Verax Helado PWM-T heatsink is the newest uber-quiet heatsink from the German manufacturer Verax. Comprised of a nickel plated copper base block and an array of rather thick stacked aluminum fins which have also been nickel plated, the Verax Helado PWM-T is a thin tower of a heatsink. Four parallel rows of 6mm diameter "U" shaped copper heatpipes join the base of the heatsink to its's cooling fins with soldered joints. Best of all for users shopping out low noise cooling solutions, the fan is held in place with four rubber vibration mounting posts, not screws. The rubber posts lift and separate the fan from the adjoining aluminum fan shroud.

Verax Helado PWM-T Low Noise Heatsink Review