I was thinking that they'd go down the Risc PC route ( https://en.wikipedia.org/wiki/Risc_PC https://en.wikipedia.org/wiki/Risc_PC ) - allow expansion cards wit

I was thinking that they'd go down the Risc PC route ( https://en.wikipedia.org/wiki/Risc_PC https://en.wikipedia.org/wiki/Risc_PC ) - allow expansion cards with both CPUs and memory on. Apple already trialled this with the accelerator cards in the current Mac Pro. Obviously there would be a penalty for off-die memory access, but I'm sure somebody cleverer than me could think of a nice way of architecting such a beast.