Those differences won't be really be much of anything, since CPU/IMC/iGPU are all on the chip itself. Just drive controller differnces are really there, and I already include that in my reviews anyway. The rest of any difference can be found from any board, since they all use different external controllers for things like USB 3.0/Firewire/Audio. Clearly though, with a new VGA, a re-bench is in order, so I'm going to have to do it anyway. My drive resutl graphs are ENORMOUS at this point. the other difference, of course, is that Z77 has some extra memory dividers, but again, that's a CPU thing, not really board-related per-se, evne though that ability is tied into the PCH. There's really not much different between Z68 and Z77, except PCIe 3.0, and add-on features like Rapid Start and Smart Connect. All that said, I'll have Z68 included in the re-bench, for sure.