I used to work on an 80 era Texas Instruments system built for the military. The CPU was 48K memory all with dip chips. Special 15 bit microprocessor (I am not making this up). The normal current draw was 40 amps. It was a two man lift to carry it around.
Odd numbers of bits was de rigeur in many customer processors, even DEC built PDPs ranging from 12 go 36 bits. And the bit-slice CPUs like the AMD 2900 family gave you whatever you wanted, in 4 bit increments.