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Does Sandy Bridge Support SLi at x16 + x16 or 8x + 8x like 1156?

post #1 of 8
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Just wondering.
    
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post #2 of 8
8X i think.
    
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post #3 of 8
From the board reviews I have seen, 8x8x. there are an extra 4 lanes due to the addition of a PLX chip but this is more to prevent bottlenecks with the USB 3.0 and SATA 6GB using lanes.

Not like it really matters, performance will be virtually identical to 16x16x.


thread moved to motherboard section.
Edited by Robilar - 1/4/11 at 1:31pm
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post #4 of 8
Well all the ones reviewed so far support dual @x8


but the Maximus IV Extreme supports

Single @x16
Dual @x8 x8
Triple @x16 x16 x8


No idea why its like that because my Maximus III Extreme supports

Single @x16
Dual @x16 x16
Triple @x16 x16 x8



Strange....
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post #5 of 8
Wish all supported dual x16 lanes to take the guesswork out of it.
    
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post #6 of 8
Quote:
Originally Posted by BigCactus View Post
Wish all supported dual x16 lanes to take the guesswork out of it.
Sandy Bridge only has two x8 PCIe 2.x lanes on the CPU. There are additional lanes through the chipset but these are used for other devices.


The only way to get "additional" lanes is utilizing a PCIe expander like the NVIDIA NF200. These actually do not create additional lanes though. They allow 16x lanes to expand into 32x lanes but the bottleneck is still there.
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post #7 of 8
Both the Maximus IV Extreme and the Giga UD7 have NF200.
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post #8 of 8
It's the limit of the chip not the MB. That's why they didn't use the 1366 MB.

Deadmau5 are you sure about that Max 4 in tri @16X-16X-8X?
If so that's the board to go with.
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