The EKL Alpenfohn Groß Clock'ner 2010 heatsink on the test bench today is a heatpipe direct contact cooler - meaning the heatpipes are exposed at the base. The heatsink stands 155mm tall, is 125mm across, 105mm deep and weighs upwards of 718grams. Simple wire clips are used to hold a single 120mm fan in position, the non-PWM fan rotates at a fixed 1200 RPM. The heatsink is compatible with Intel socket 775/115/1156/1366 processors and AMD socket AM2/AM3 CPUs.