I am using e4300 with stock heatsink and thermal pad that it came with.. Normally my cpu usage are between 1-15% and the temperature hovers between 42-46 degree. I was using tmpgenc to convert some file to mpeg2.. my cpu usage was like 55% and temperature47-50 and it took about 22 mins to convert .. Then I used Cinema craft encoder which uses all the cores and used 95-100% of the cpu and the encoding took only 5 minuete.. But the cpu temperature went to 77 degrees.. !! Its very tempting to encode that fast but does that damage the cpu?.. also isit the heatsinks problem that the temperature goes that high?..