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Can you crossfire a XFX ATI Radeon HD6870 with a XFX FX777AZNF4 HD 7770?
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  1. No they must be the same GPU
  2. No you cant. The GPU's have to had the same graphics engine and other properties.
  3. No. They must be the game gpu with the same amount or RAM, but they can be from 2 different companies.
  4. Best answer
    No, you can't, but let's clarify some points:

    With AMD you only need them to be from the same series (i.e. you could crossfire one HD7770 with a HD7790 or a HD6850 with a HD6870).

    Ideally they should have the same amount of RAM, however if there's no option you could crossfire one gpu with 2GB and another with 1GB, the end result is that they'll only use the least amount of RAM available, in this example 1GB from each.
  5. Jacob McIntosh said:
    No. They must be the game gpu with the same amount or RAM, but they can be from 2 different companies.


    GPU's with different amount of VRAM's can be crossfired.
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