Four heat pipes with a diameter of 8 millimeters are placed on the nickel-plated plate of the Thor's Hammer and directly absorb the heat of the CPU. Thus Xigmatek once again utilizes the HDT technology (Heat pipe Direct Touch). Three additional heat pipes with a diameter of 6 millimeters lie directly above the heat pipes that touch the CPU. Xigmatek speaks of a "Double Layer” arrangement.
A special feature of the cooler is the special pattern the fins are positioned in. The aluminum plates are offset in order to reach a bigger surface without increasing the overall dimensions of the cooler. Due to the tower design a 120 millimeter fan can be attached with anti vibration plugs.
FULL STORY @ PCGAMESHARDWARE (http://www.pcgameshardware.com/aid,673035/News/Xigmatek_Thors_Hammer-_CPU_cooler_with_seven_heat_pipes/)