FrostyTech posted a review on the Silverstone NT01-Pro Heatsink
A quote from the article:
Silverstone's NT01-Pro is a heatsink designed for small form factor cases or finicky situations where a standard tower heatsink just won't fit. Really though, if you've got a SFF chassis, HTPC or a height restricted 4U rack mount case, the Silverstone NT01-Pro heatsink is going to be of particular interest.Silverstone NT01-Pro Heatsink Review @ FrostyTech