I never saw where the notion that lots of data requires lots of processing power comes from. Sure, it needs to be compressed, but I would have thought Canon had figured out how to do that efficiently long ago.Someone please correct me if I'm wrong; I'm speculating out loud, not making an argument here, but does the 1DX mk. III really have so much horsepower, or is this just marketing?
Evaluation of the AF system, which in the 1DX III has a ton of information to process, is likely what requires the high end chips. And jn this instance, the massive video specs as well.