I have been on the ATI website and the HD4770 will only X-Fire with another HD4770, But there are two different models.

Does the 'HD-477A-YDFC' model crossfire properly with the 'HD-477A-YDLC'?
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  1. Yes as long it is the same GPU you are fine. There might be some clock speed difference between the cards but they will default to the lower speed.
  2. Best answer
    Yes, they would CrossFire fine. All XFX 4770's have identical specs. They may have different cooling solutions, though.

    Follow these steps to see side-by-side comparison:
    Select Graphics Cards
    4000 Series
    first card
    Column 1
    After that card appears, select:
    3rd card
    Column 2
  3. Thank you for this information. i think i know what to do now. =]
  4. Best answer selected by arranhardy1991.
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