TherMax Korea HiFlux TIM HF-60110BT
 

Low Melt Alloys as TIMs are strong competitors to "traditional" thermal greases, although with some caveats.

Thermal grease manufacturers have added metals to grease mixtures to increase thermal conductivity - a notable example is Arctic Silver. Logically, if you can get rid of the non-metallic carrier and just have a metallic TIM that fills the micro-voids between the heatsink and CPU, you'll have a superior TIM - nothing like pure metal.

One approach would be to solder the heatsink to the CPU - the drawback is that the melting point of solder will destroy the CPU - not a good move. Hence the Low Melt Alloys - these are alloys that melt at temperatures below those that will kill the CPU; the TherMax Korea HiFlux TIM HF-60110BT starts to flow at 62ºC - TherMax recommends that you run up to 65ºC to ensure melting.


http://www.overclockers.com/articles1268/