FrostyTech has posted a review on the Zalman CNPS7700-Cu LED Heatsink

The CNPS7700-CU LED is Zalman's famed 'flower' heatsink technology at its best, and it's a method of manufacturing that offers very direct thermal pathways between the cooling fins and heat source. Each individual copper fin is in direct contact with the CPU, and that dramatically reduces elements of thermal resistance from entering into the equation. Coupled with a large slow moving fan, the Zalman CNPS7700-Cu LED uses its sheer amount of surface area, and large volume of air, to cool itself quietly above all else.

Zalman CNPS7700-Cu LED Heatsink Review