From google it says Tegra x2 would only bring memory improvements, Is this like IPC? And the Shield has the same cpu but runs 50% or so faster. I guess this is because it is bigger with better cooling but i think it currently very simple to change to X2 go from 4gb to 8gb memory and utilise the bandwidth improvement and overclock things more. It takes literally unplugging the internal fan to shutdown at 66c. And you know that would sell well with a larger screen. Lets say a bezel free 1080p screen to boot. And bam theres an XL version without going to Tegra X3.