Frank_Rizzo - 10:14 pm on Jun 21, 2010 (gmt 0)
Here are a few you can try:
Make sure bios settings are optimised for cool and quiet / smart fan.
Underclock the CPU. If possible in the bios you can also low CPU core voltage and thus reduce temps considerably. If modern AMD X4 consider temporarily turning off a couple of cores.
De-dust all fans. Remove fan from CPU and de-dust the heat sink. If the CPU is a few years old change the thermal compound.
Change the fans to better performing ones with low dB / high CFM.