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When researching desktop graphics cards, I noticed that many nVidia cards support SLI, only the most expensive support triple SLI. However, I did not see any cards that said they support 3-way CrossfireX. I saw a motherboard that supported 4-way CrossfireX, but that did not help me find a list of compatible graphics cards. Are all CrossfireX cards compatible with 3- and 4-way CrossfireX, or are there only a few special cards?

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up vote 2 down vote accepted

Yes -- all ATI CrossfireX video cards are compatible with 3 and 4 way CrossfireX.

You cannot mix outside the same "family", however, and every article I have ever read on the subject strongly recommends using the same model number. (minor brand differences are OK, as long as it's the same ATI model number.)

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Right, I had seen that you had to work within family, but since nVIDIA cards will say "SLI-capable" "Triple-SLI capable", etc, but ATI cards never specified, I wondered if all were compatible. Thanks for the answer. – SSumner Oct 6 '11 at 20:01

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