What Thermal Interface Material is the most thermally conductive?

The EMI Thermal TP-9 Void Filler and Natural Graphite both have a thermal conductivity of 5.0 W/mK. There is always a price versus performance consideration when considering which Thermal Interface Material to choose. Materials with a higher thermal conductivity will be more expensive but should be considered when the optimum amount of heat needs to be removed from the heating generating component.

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