PureOverclock posted a review of the Xigmatek D984 Cobra CPU cooler.

Today we're testing the Xigmatek D984 Cobra CPU cooler that offers Heatpipe Direct Touch (HDT) technology in a small form 92mm fan setup. More importantly, however, is that the Cobra is a top-down cooler design, and we'll be comparing it alongside its brother the Nepartak, which is a tower-style cooler. This should give a good indication of the efficiency of each design.

Xigmatek D984 Cobra Review