I thought I'd post on the noise of my new machine. With that Antec 550 watt PS, 4 80mm case fans, CPU and chipset fan, and all that, mine is indeed pretty loud. About as loud as the 10 year old office laserjet printer I've got that weighs about 100 pounds. But I've been able to sleep with them quite well. The hum of these things doesn't bother me too much, I guess.