FrsotyTech has posted a Vantec 6040H/6040 Pre-Production Copper Heatsinks review

The 6040 and 6040H (with just a faster fan) we are looking at today are pre-production, engineering samples. They are still a little rough around the edges, and you can see where someone has actually be grinding away on them, but they work fine. The real interesting thing with the 6040 series from Vantec is where the fins are interlocked with one another. The interlocked sections have been moved to the lower end of the fins, leaving the upper area free for air to flow through. Each fin is spaced 1mm apart from its neighbour and 0.2mm thick. The fins are dip brazed to the base, and this usually makes for a good thermal joint if done properly. The clip uses all three teeth on the socket and requires no tools.

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