I use the TX650w to power the system you see in my sig. Some stuff not included in sig are (Antec 300 case, 3 SATA hard drives, 20x dual lay SATA DVD-RW, and an Audigy ZS 2 sound card). It runs the system with no hickups what so ever, so I would recommend it. I was in the same delima as you were, but ultimately went with the TX650w. It just made more sense to me. It is very good for the money imo.