AMD Zone takes a look at the all copper Vantec CCK-6035D HSF. here's a snip:
"There seems to be a mad rush by a lot of companies to produce HSF units using copper parts. We have seen, in a lot of instances, that copper can offer better thermal performance. Today we are taking a look at the latest offering from Vantec. The CCK-6035D is an all copper (except for the shroud) heatsink with a Delta 6800 RPM fan. It uses small fins, like the PCH-137 and OCZ Gladiator. However, the size of the Vantec is slightly larger than those units."