E7200 Mod Help

I finally decided to pop the cork or so they say meaning I removed the IHS to replace the stock compound that Intel uses for better temps and had very small returns. So I am asking if any one knows of a compound that is better than arctic silver 5 even if it is electrically conductive or a cooler that has a small base that is spring mounted that can reach the die with out the IHS. Why, simple once the cpu hits 60c or above while at 3.6GH~ it becomes unstable and crashes even at 1.3v or higher. I should have bought the e8XX series instead thanks cheaptel.