I would like to see that number as well, I actually expect it to be a lot more than a million.

Take 1000 times the clock rate, 4 cores, multiple instructions per clock instead of multiple clocks per instruction. Operations on 64 bits i.o 8 and the Z80 doesn't even have multiply or divide operators and would need to loop and add to do a multiplication/division. And then think about things like ARM SIMD instructions.

True, but can multiple cores, pipelining, etc... really make up for another factor of 1000x? And most of this complexity exists because memory latency couldn't keep up.