If anything, you were generous. You could run WYSIWYG word processors on a 512KB Amiga or Atari. Both with a single M68k CPU at <8MHz. Interestingly they were on the market at pretty much the same time as the secpnd generation ARM CPU's used in the Acorn Archimedes range, and while there were numerous discussions about which were faster, a 7MHz-8MHz M68k is at least in the same magnitude performance wise as an 8MHz ARM2 CPU..
(EDIT: Actually, there was at least one WYSIWYG word processor for the Commodore 64 too - GeoWrite)
Factoring in improvements in architecture on top of clockspeed increases we're probably talking at least a thousand times more performance per core for a Cortex A9 vs ARM2. And that's likely generous towards these old machines too...
(can you tell I'm frustrated that my phone and tablets (Android; not bashing MS for this) are more sluggish than my 1988 Amiga 500+)