Hi Y'all
really it all comes down to the data rate necessary to solve the original problem, if it's simply a matter of taking in data from multiple, slow speed sensors then the data rate can be equally slow. If however, there are a number of subsystems which require action *NOW* then the bandwidth requirement is that much greater and requires every part of the system to be fast or faster. Bearing in mind that PIC's generally have a max clock of a fairly pedestrian 20MHz, let's lay back and smell the coffee
Ed 8)