[cdawall]

Originally Posted by cadaveca

I'm pretty sure I read an interview with some ATI dude that stated that it wasn't just about bandwidth, but also the number of lanes, as although 4 lanes could feasibly be enough, the card in that x4 slot still needs to use some of those 4 lanes to communicate with the other card, making that overall bandwidth figures meaningless.

To prove this, you smiply need test with PCIe 3.0 vs PCIe 2.0, and look for linear performance losses based on lanes, rather than the bandwidth. And guess how that works out on PCIe 3.0...?

Good call...