What's Better? (PCI-E question)

Teny

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SLI/CF in PCI-E 2.0 running at x8?
Or SLI/CF in PCI-E 1.1 running at x16?
 
I don't think x8 vs x16 make that much of a difference either. I was just wondering which one would perform better, even if it is very minimal.
 
Considering that PCIe 2.0 effectively doubled the available bandwidth over 1.x, I would think that a PCIe 2.0 SLI/CF setup @ 8x would still be faster than PCIe 1.1 @ 16x. But in all reality, you really wont see the difference between the two as no cards can saturate the available bandwidth.
 
I saw a review where they put a 5970 and a GTX 295 in x8 slots, and they each lost about 20%.

As far as what it takes to saturate an x8 slot, a 5850 is where it will start to hurt performance, with it becoming more noticeable with higher clocks. Anything more powerful loses more.

I have done a lot of googleing on this.
 
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