Wow. I hooked up the Arctic Cooling 120mm exhaust fan to the 5v molex and it's amazing how quieter the computer runs. CPU temp idles at 2C higher reaching 33C. I will do some burn in tests overnight to make sure the load temps are okay.

sometimes just "a bit" of airflow is enough to keep things cool, cooling/noise efficiency diminishes quickly once you turn up the fan RPM, most times the best balance is found at lower volts;