[Tungrus]

For effective heat transfer between CIM (or heat source) and the heat sink, both should have max contact area possible. The heat sink in the kit does not contour to CIM curvature (at least the one I saw), reducing effective heat transfer, which is in addition to paint on the CIM. To maximize the heat transfer there are compounds, a paste that goes between the heat source and sink. Not sure if using heat compound will be considered as tampering, in my opinion it should not, thats for Q&A.

Having said that using this heat sink with some contact will result in better cooling than no heat sink. The fins provide larger surface area of heat dissipation.