030 VS 040
040 / 25 =
Faster ~20-23mips, built in FPU doing several MFLOPPS
Hotter Big heatsink is mandatory and benefit from a fan aswell
Poor Compatibility Runs into trouble over and over again if it's not written specificly with that CPU in mind
Upgrade Some boards support the uppgrade to a 060 CPU
030 / 50 =
Slower ~9-10mips, extra FPU chip needed for a single MFLOPPS
Cooler Benefits from heatsink but not mandatory
Good Compatibility Runs most anything even if it's not written specificly with that CPU in mind
Upgrade Simply not possible