dont get a qtec cheapo power supply cost me
i use a tagan power supply 480w £80
my qtec 550w was a sack of shite under load it went as low as 330w and crashed my machine
get a good motherboard with a decent soundcard built in
unless yoursoundcard is a creative audigy it wont be the danglies for doom 3
sound is as good as the graphics in that game