Benchmark Reviews published a review on the Xigmatek HDT-S1283 Exposed Copper Heatpipe CPU Cooler

Heatpipes have not been an integrated part of the CPU heatsink for very long now, but the tall design with a fan fixed to the front has already been done several times over. Copper heatpipes, and later copper bases, helped reach the coolest temperatures available from air cooling, but enthusiasts didn't have to wait long for the next advancement. Xigmatek has delivered the HDT-S1283 Exposed Copper Heatpipe CPU Cooler with 120mm cooling fan, and Benchmark Reviews is simply amazed by the unprecedented results. This is by far the best cooler we have yet to test.

Xigmatek HDT-S1283 Exposed Copper Heatpipe CPU Cooler Review