"This heatsink is a little different than most ones that use 120mm fans in the fact that you can see the copper heatpipes on the bottom. It would appear that Kingwin is trying to get it so that the heatpipes come into direct contact with the CPU, which could actually improve heat dissipation since there is no other source of metal between the CPU and heatsink that would require more time for heat transfer. Apart from the heatpipes being copper, the rest of the heatsink is purely aluminum. Additionally, this heatsink only comes packaged with one fan and it would appear that it is not capable of using additional clips to secure another one to it, so one would have to resort to zipties for a push/pull configuration."