According to PC Apex, Arctic Silver 3 may have been displaced as the king of thermal compounds by CoolerMaster’s NanoFusion.  While 1 or 2 degrees may not seem like an amazing improvement, it might let you push your CPU just that little but harder.
“We have a new, quick review up on an outstanding thermal transfer paste from Cooler Master named NanoFusion. This stuff managed to perform better than Arctic Silver.”

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