"The Scythe NINJA 2 CPU Cooler is an amazing cooler. At first glance there's no mistaking that this is one massive cooler. The heatsink weighs 705g without the fan, with the fan installed it's 820g. The CPU Thermal Design Power or Thermal Design Point specification for this cooler is 65W without the fan and 130W with the fan. The heatsink is a combination of aluminum and copper. The large aluminum fins connected by copper heatpipes which connect into a solid base. This nickel plated copper base is extremely smooth which allows excellent contact between it and the CPU. Watch the video to find out more..." ~http://www.3dGameMan.com