How much wattage do I need?

I'm looking to buy a new PSU for my bnew vcard which is a Powercolor 7870.

So my specs is:
AMD Phenom II X4 955 3.2 Ghz w/ a Corsair H60 cpu cooler
Crucial Ballistix Tactical Tracer 8gb ddr3 1866 CL9
2 HDD's
Power Color 7870 myst edition.

Any insights is most appreciated.
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  1. Best answer
    If that is your entire build, then I would say less than 500W.

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  3. Thanks for all your answers and it is most appreciated. Im thinking of getting a Seasonic MI2II 520W.
  4. That is also a good choice.
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