Try This (Score 1)

hey how goes it. if you are technially apt what you can try is this. buy a fan that has a thermistor on it (nidec makes a nice one i know cause i did this exact same thing) take your power supply out, open it up, take the old fan out, replace it with this new one. hook power up to it and re-assemble everything. this will make your system quieter cause the fan will only idle about about 1000 rpm or less and then go faster as the heat goes up. give it a try cheers