Will a xfx 550w core edition be enough?

Hi there, for my new pc build I'll be getting a i5-3570k with a COOLER MASTER Hyper 212 Plus , ASRock Z77 Extreme4 and a SAPPHIRE Radeon HD 7870. I'd like to overclock my cpu to about 4.2GHz.
Is the XFX 550w Core Edition enough for this??
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More about will 550w core edition enough
  1. more than enough
  2. You will be fine, just fine sir. If you have intents on the future of getting a higher end card you will be fine with a single card however with a sli setup of two higher end cards you may run into issues.

    2x 7970 no
    1x 7970 yes
    1x 7870 yes (good to go dude)
  3. For a single card setup your PSU could handle even the most powerful like 680 or 7970.

    Only if you plan to use SLI or Crossfire in the future you'll need to upgrade the PSU.

    Also, when you want to know system requirement it's best to verify with the manufacturer all the info is there, for instance:

    http://www.amd.com/US/PRODUCTS/DESKTOP/GRAPHICS/7000/7870/Pages/radeon-7870.aspx#2
  4. I agree mc with going with the manufacture /chip makers power requirements/system requirements however many don't.
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