FrostyTech posted a review on the Xigmatek HDT-S1283 Exposed Heatpipe Base Heatsink

The Xigmatek HDT-S1283 heatsink features three heatpipes in direct contact with the top of the processor, resulting in one very potent CPU cooler. The technique is called Heatpipe Direct Touch, and for today's class of heatspreader capped processors it's the only way to go. The Xigmatek HDT-S1283 heatsink FrostyTech is reviewing today is equipped with vibration absorbing rubber fan posts, a 120mm PWM fan that scales in speed from 1000-2200RPM, and a little spoiler to direct exhaust airflow down towards adjacent motherboard components.

Xigmatek HDT-S1283 Exposed Heatpipe Base Heatsink Review