consider watercooling, you can get good cheap systems and it is not only silent, it performs better too, and it is good even if you are a non overclocker ( you could also save some money be buying a XP1900 , spend it on a watercooling and overclock ya processor 66 mhz, so ya get a XP2000 and the temps wont rise over 1°C - if ya would go for a normal XP2000 and aircooling ya temps may be 10°C higher)