Better than that ugly mess called Intel x86. Just a shame that Intel and not ARM or Motorola didn't win on the desktop.
I recall that when they first tested the ARM they forgot to connect the power line to it but miraculously it was working, it was being powered by the logic signals of the host BBC Micro (it was developed by fitting it a CPU expansion to the BBC Micro). It was power efficient even then, although it wasn't a design goal.
Also, give Apple credit for seeing what a great CPU it was when they were looking for a processor for the Newton. It was a deal with Apple that led to the formation of ARM as a separate company since Apple was not going to be supplied to a competitor in the computer market.