Asides from the use of copper-aluminium alloys in the production of heat sinks, there has been a breakthrough in the use of aluminium combined with carbon-derived materials. These carbon-derived materials possess higher thermal conductivity than copper, and its fusion to aluminium, which is ductile, makes it a perfect alternative. Natural graphite composite materials have also been used. However, the conventional aluminium and copper heat sinks have proven to perform better than the alternatives.