Sorry I haven't really read the original post. But here it goes.
If you really want to make sure that its enough, adding that you need numbers and stuff, you can read the link below:
How to: Convert between Watts, Amps and Volts. - Overclock.net - Overclocking.net
But of course, that includes looking for technical documents to some parts of your system. Tendency with Online PSU wattage calculators are that they become inconsistent. Over time, companies release new products that do not have the same electricity specifications.
I'm saying its enough because in my experience and with some feedbacks from friends, a 500w PSU can already do a lot more than what your planned system could do. And as what I have read in some forums, if you just want a decent rig with no overkill, a 500w is enough. A 750w-800w is already overkill and is only recommended if you go SLI.