heatsink

In terms of heatsink material, each material has different thermal conductivity, which are silver, copper, aluminum and steel in descending order of thermal conductivity. However, if silver is used for the heatsink will be too expensive, so the best solution is to use copper. Although aluminum is much cheaper, but obviously thermal conductivity is not as good as copper (only about 50% of copper).

Currently, the commonly used heat sink material is copper and aluminum, both have their advantages and disadvantages. Copper thermal conductivity is good, but more expensive, more difficult to process, too heavy (many pure copper heat sinks are more than the weight limit of the CPU), the heat capacity is small, and easy to oxidation. And pure aluminum is too soft to use directly, are using aluminum to provide sufficient hardness, the advantages of aluminum is inexpensive, light weight, but thermal conductivity than copper is much worse. Some radiators take the best of each, in the aluminum radiator base embedded in a copper plate.