x16x16 or x8x8

oblongsquare

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Apr 23, 2014
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I've spent the last hour Googling this and am no better off now than I was. I've lots of stuff but it's all just people saying they are effectively the same except, maybe, on higher end cards. But there's no explanation of WHY.

I'm considering using a pair of 290x cards in Crossfire and I need to get a motherboard to support it. I can spend a ton of money getting a board that supports x16x16 or much less money and go x8x8.

I'm more concerned about the actual performance difference I'm going to see when playing FPS games like BF4. I would also like to understand what the differences are between the two configurations. Why would I want one over the other?

Thanks for any help.