Well according to my alienware receipt i got a 400 WATT POWER SUPPLY. I don't know if thats enough or not, but thats all i can find out. I have a ati9700 pro, but I have no video connected between my pc and the receiver right now, its just a digital coax coming from the Audigy 2 zs digital out. As far as the line conditioners, where can i find one of those, and how much am I getting set back? thanks!