I have an old desktop that i build years ago around an Amd opteron 165 processor. I used a dfi nf4 motherboard, obviously that isn't usable. I want to use an Amd a6 3500 processor. Can i use my rosewill 550d power supply? My Wd 3200k hard drive? Or my plextor 716 cdrw drive? That way I will only need a motherboard, case, and ram. Any suggestions? Thanks