In article <1125924582.926841.36880@g47g2000cwa.googlegroups. com>,
neworder7@hotmail.com says...
> So does this mean i should be getting a 500w PSU or is a 400watt PSU
> fine.
>
You should work out the maximum current that your equipment requires
from each rail, and buy a PSU that can sustain that output. Total power
rating can be fairly meaningless, and the ratings for cheap PSUs can be
fairly meaningless - you could find a cheap PSU with a high rating is
inadequate for your needs while a better quality PSU with a lower rating
will work fine.