FrostyTech has posted a Tocools Crown Retail Heatsink review

The Crown heatsink from Tocools is one of the more interesting adaptations of an extruded heatsink because of how the base is formed. On typical run-of-the-mill extruded heatsinks the base is a constant thickness over then entire area. Where the Crown sets itself apart is that it uses a base with varying thickness. Along the central axis of the heatsink the base rises to a peak 18mm high, and along the outer edges it slopes down to just 1mm. Of course, if you look from the outside the Crown looks a simple multi-fin heatsink.

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