PSU: Amps per +12V rail needed

Can someone plz give me the minimum Amps per +12V rail (or combined) needed for this setup:

Mobo: MSI 790GX G65
CPU: Phenom IIx4 @ 3.4 GHz
RAM: Apacer DDR3 1333Mhz 2x2GB
Graphics: MSI R6870 Afterburner
HDD: WD Caviar Black 1TB
OD: LG Blu-Ray/DVD-RW
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More about amps rail needed
  1. Lets say 125w cpu + 50w mobo + 150w gpu = 325w or 27 amps.

    As explained above and in your other thread a quality 500w will always supply enough 12v power for your setup.
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