sorry for this n00b question. I tried using the calculator but i dont know a lot of my own voltages lol. I currently have a sparkle 300W running 3 80gig hard drives, a 9800 pro, and a DVD burner on a barton 2500+ 1.8ghz oc to 2.2ghz, and i dont think i'm getting enough power because after stressing my computer for about 30 minutes it will just restart - do i need a 350W or 400W power supply? i'm on a budget ... ~$50. Thanks