Core temp. Your cpu has 4 cores, but it only uses one or two at a time for most applications. If your board has a shutdown temp in the bios, set it at 70c. And remember that all the cores will have different temps due to load. Coretemp lists 2 cores with my i3, and the temp varies constantly between 30-42c. It's cool where I live right now, so temps are low; they will rise at least 10c by the summer.