Vashyo on 10 June 2011
My system is more powerful than that and it's on a 500w PSU (955be+5850)
You should do fine even with a good quality 400w, that system propably won't even peak at 300w (do note that capacitators age so having a little more will increase the lifespan)
I'd suggest reading sum reviews and opinions about PSUs, some are really unreliable and some are electricity hogs. +80 certified ones are more efficient with less electricity used.
