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x8 or x16 crossfire for AMD HD 6950

post #1 of 20
Thread Starter 
Which one is better for crossfiring 2 6950s? Will the bandwidth be a bottleneck for the 2 cards? WHich motherboard should I choose? Asustek M4A89GTD or MSI RX870 870A FUSION.
post #2 of 20
x16 would be the best case scenario, but x8 will be perfectly fine.
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post #3 of 20
You will see about 1-10frames of loss depending on the game / benchmark /etc.

If you can try for x16, but it wont kill you.
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post #4 of 20
x16/x16 is obviously better, but the performance difference is very minute. Probably only about 1% - 3% faster than x8/x8.
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post #5 of 20
It won't make a difference x8 or x16.
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post #6 of 20
x8 will perform the same even with 580s until you get to super high res(three monitors). 590s and 6990s do like x16 though.
    
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post #7 of 20
You would be hardpressed to notice any difference at all between x16 +x16 vs x8 + x8

Read this article for more info:

http://www.tomshardware.com/reviews/pcie-geforce-gtx-480-x16-x8-x4,2696.html
post #8 of 20
Go with the ASUS mobo, it has the better components for overclocking. 8x/8x vs 16x/16x is like 2-3%
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post #9 of 20
Wont make a difference on a 6950, maybe a 6990 or a 590.
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post #10 of 20
Quote:
Originally Posted by huhh;14656597 
maybe a 6990 or a 590.

There's no maybe about it, x8 will kill a 6990 or 590 because you'll be running each card at x4/x4.
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