FrostyTech posted a review on the Gelid Tranquillo Heatsink
The Gelid Tranquillo heatsink stands 153mm tall and ships with a single 120mm PWM fan mounted. The tower-style heatsink weighs 645 grams and is compatible with Intel socket 775/1156/1366 and AMD socket 754/939/940/AM2+/AM3 processors.Gelid Tranquillo Heatsink Review
While you might expect the Tranquillo to be an exposed base heatpipe heatsink, it is not. Instead the four copper heatpipes are grouped closely at the base on a small copper heatspreader, and also grouped relatively closely to one another where they pass through raw aluminum cooling fins.