PSU for gaming pc

This is my current build

I may eventually crossfire once necessary. Someone mentioned that I need 4 PCI-E connectors. I think I need about 750W. Can you recommend a good PSU for my build?
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More about gaming

    AMD thinks you only need a 500w PSU and I have not seen a 7970 that takes more than two 8-pin PCI-E connectors. (Most take one 6-pin and one 8-pin)

    The power supply you picked is more than enough for a single 7970.
  2. That 7970 CF needs ~520W on peak(even more with OC) so that 750 is good enough.

    And it will deliver even more tha 750W if needed but your system wont ask the PSU to do it.

    So you are safe. Good luck with your build .
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