I have a Raidmax ATX-568WBP case, and Antec Earthwatts 500W PSU. Yet, i still hear something noisy. I've ruled it down to the Q6600's fan. The BIOS shows the RPM at over 3200. It's a 4-Pin fan, and i have 'CPU Quiet Fan' enabled in BIOS, but it does NOT cut the racket. Does the stock fan of the Q6600 have PWM? Is the fan on it sleeve bearing, do i need one that's Rifle or Ball bearing? What's a good alternative quiet fan (>21 dBA) for under $30? Preferably, NOT with push-pin clips, since they're a pain to put on. Some help would be great.