When posting about a cooling problem please state not only your system and full load CPU temps but the current temp of the room also plus does the temps drop with the case is open (please keep all temps in Celsius as very few countries use the old Fahrenheit scale).

Also include the make and model of your heatsink and case (links would be even better) as well as the number of case fans and whether they're intake, exhaust as well as they're placement as this will greatly help us to help you.