krscla,

you'll have to upgrade your cooling systems. get a large, high-quality CPU heat sink/fan (a high-end GlobalWin, for instance). mura lang to, about 1000+ at most.

next, improve the air circulation in your case (especially if its closed) by adding an intake fan at the bottom front, an exhaust fan below the power supply if the case can accomodate it. also, organize the cables and wires in the case (tie them together) so they don't block the airflow. finally, you may want to upgrade to a high-quality power supply with two fans (a good idea anyway, whether you're having heat problems or not)