Will a 580W Hiper HPU-4M580 be ok, are there any known prob's with it? it will be running a x2 4600 @2.6ghz, 2gb ram, 2hd's,2 opticals, a 7900GTX and a x-fi soundcard. and do the arctic64 freezer pro's, come with thermal paste with them? and how do you get rid of the old thermal paste?