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Which one

post #1 of 3
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hi guys, im trying to decide to get either 2 6870's in crossfire or just 1 6970.

i am gonna use a gigabyte p67a-ud5-b3 motherboard, and the only thing that i am worried about is the fact if you do crossfire or sli, the 2 x16 lanes operate in x8 mode. but if i were to use 1 6970 it would use x16 mode.

All with a 2500k

which one do you guys think is the best?
    
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post #2 of 3
In the end the choice is yours, both options have advantages:
*2x6870 - faster
*1x6970 - quieter, more available memory (good for 4MP displays), probably enough performance for any game that's gonna be released for Dx11, less driver-related worries, opportunity to add another 6970 down the road

The 8x PCIe isn't important. It used to matter before PCIe 2.0. PCIe1.0 was half the speed of 2.0, so when boards have switched to 2.0 the old 16x@1.0 became as fast as the new 8x@2.0. Of course 16x@2.0 is even faster, but it can only make a difference on very high end cards like the 6990 or the GTX 590.
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post #3 of 3
I would get a 6970. Even though 2 6870s will be faster, you can always get a second 6970 down the road to upgrade
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