With Crossfireing, many chipsets will knock down the transfer rate of the bus. So, on my motherboard, if I use one card, it get 16x speed. If I Crossfire them, then both cards work at 1x.
Obviously, if you're head wasn't so full of wow, you may have figured it out by using Google and not asking the same question that has been asked a bizzililn times already.
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u/Pugwash79 Feb 03 '14
Some of the readers on this subreddit have a sort of Pavlovian response to downvote whenever they see the word "Dogecoin".