Hi, I just upgraded my XPS T600r processor with The PowerLeap 1.4 Tualatin cpu upgrade.an 639 mb of ram.if i get the fx5700 ultra do i have to update to 300 watt power suppy or will the original work,has anyone done this. A n is there alot of performance lose if i have to go with the plain fx5700. or is there a better card in that price range .i just use this for gaming if it matters.