As far as the heat sink material is concerned, the thermal conductivity of each material is different, and it is ranked from high to low according to the thermal conductivity, which is silver, copper, aluminum, and steel. However, it would be too expensive to use silver for the heat sink, so the best solution is to use copper. Although aluminum is much cheaper, it is obviously not as thermally conductive as copper (about 50% of copper).
At present, the commonly used heat sink materials are copper and aluminum alloy, both of which have their own advantages and disadvantages. Copper has good thermal conductivity, but it is more expensive, difficult to process, too heavy (many pure copper heat sinks exceed the weight limit of the CPU), small heat capacity, and easy to oxidize. The pure aluminum is too soft to be used directly, and the aluminum alloy used can provide sufficient hardness, and the advantages of aluminum alloy are low price and light weight, but the thermal conductivity is much worse than copper. Some radiators take their own strengths and embed a copper plate on the base of the aluminum alloy radiator.
For ordinary users, the use of aluminum heat sinks is enough to meet the heat dissipation needs.
The radiators used for heating in the northern winter are also called radiators.
The heat sink plays an important role in the composition of the heat sink, in addition to the active heat dissipation of the fan, the evaluation of the quality of a heat sink largely depends on the heat absorption capacity and heat conduction ability of the heat sink itself