Mine peeked at 107c. So, for my mini, i bought an extra cover ($15). Drilled 1/8 holes evenly spaced around the edge of the cover of the slanted brim that faces forward. On the un-sealed side only. Machine stays below 99c while hd encoding. Top is barely warm now. Drastically increased air-flow from exhaust port! Just clean out the mini periodically. And make sure u have new thermal paste. Fan is also quieter at full speed. 2012 2.6 quadcore i7.