Embed copper plate or heat pipe

A copper plate (heat spreader) or heat pipes can be embedded in the heat sink. Copper plates and heat pipes have higher thermal conductivity and increase performance.
Left: All aluminum heat sink
Middle: Aluminum heat sink with a copper plate embedded base
Right: Aluminum heat sink with heat pipe embedded base.

* Note: Embedded Copper surfaces cannot be anodized and embedded Heat Pipes are usually nickel plated.