How do I determine what the right power supply is for my mobo/gpu/cpu?

Question

I have a new MSI Neo4/SLI Platinum (MS-7100), a new BFG nVidia 6800 GT (overclocked) and a 4200+ x2 athalon. I want to know what the right sized psu is AND how you determine that. This is my first built from scratch computer in 15 years, so I'm real rusty, but I plan on doing many more in the future.

Answer 1

Here is a pretty good article on it:

http://firingsquad.com/guides/power_supply/page2.asp

More info:

http://www.devhardware.com/c/a/Computer-Cases/The-Case-and-Power-Supply/7/

A power supply calculator:

http://www.journeysystems.com/power_supply_calculator.php

Good luck - HTH!

Answer 2

Use this:http://www.extreme.outervision.com/psucalculator.jsp
Very good site for calculating power supply needs.