Can i run two 6870's on 550watts?

Link to my psu: http://www.newegg.com/Product/Product.aspx?Item=N82E16817341022&Tpk=fatal1ty%20550 Its 80+ certified. If not, how much wattage would i need and could you sugguest some psu's for me?

System Specs:
amd athlon ii x4 645
asus m4a89gtd pro usb3
8gb ddr3 1333
1 ssd
1 hdd
radeon 6870
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More about 6870 550watts
  1. Anyone?
    I used some power calculator and put in specs similar to mine and maybe a few extras and got this with 2 6870's. http://awesomescreenshot.com/013qwvf1

    Is that safe?
  2. You listed all your specs save for the power supply's. A crap 550w, no. A high quality gold rated 550w, most likely yes.
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