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Preformance on Crossfire Radeon HD 7770?

I was looking in to getting this because of the free games it comes with even though a single 7800 series also has the same benefits. Would the performance be greater or less than a single Radeon HD 7850 or GTX 660?
Is a 500w or 600w PSU sufficient?
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More about preformance crossfire radeon 7770
  1. get a 7870, or GTX 660, or wait for the 8850, I think they might come soon, and for $200, I think They will probably be by the 7950, and you wont have microstuttering and driver problems with a single card.
  2. Best answer
    Don't X Fire / SLI low end cards. In most instances a single GPU setup is better or equal. Dual 7770's performance is somewhere in between the 7850 & 7870 but if you're resolution is more than 1920x1080 a single 7850 is better. The 7770's can't push the frames at higher resolutions.

    A single card will also use less power & produce less heat in your case.
  3. Best answer selected by examplehi.
  4. dscudella said:
    Don't X Fire / SLI low end cards. In most instances a single GPU setup is better or equal. Dual 7770's performance is somewhere in between the 7850 & 7870 but if you're resolution is more than 1920x1080 a single 7850 is better. The 7770's can't push the frames at higher resolutions.

    A single card will also use less power & produce less heat in your case.

    thanks for the info
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