That brings us to LGA2011. It offers x16/x16/x8 which seems negate the bottleneck. The price difference between the two systems would be fairly negligible assuming the 3820 ships at 289.99. The $70 dollar difference vs the 2500K is offset by a cheaper X79 motherboard vs the nf200 Z68 offerings.
While I won't be seeing the locked 3820 hit 5Ghz like a 2500K could, I have yet to see any evidence that gpus are bottlenecked at 3.9 speeds either.
I also know the 7950 is right around the corner, but unless they've got the microstuttering issue resolved with just 2x cards, I think I'll be sticking with the 3x 6950 solution.
$55 dollar difference isn't going to bridge the $70 gap between the two processors not to mention the additional $40 to go from 8GB (1155) to the 16GB that will be required for Z79. Still we're talking about a $55 dollar difference total between systems. I'll be buying an aftermarket HSF either way so that doesn't tabulate.
The primary question remains. Will non-bottlenecked 3x6950 perform better at 3.9 than bottlenecked 3x6950 at 4.5+?