[Bobalu]

I remember all those huge 5v power supplies from the early days...before switching supplies.

Still have some of those old heavy transformers.

[Red Badger]

I remember a conversation with a now deceased engineer at the time. We were looking at the specs for the ‘new’ 386 microprocessor.
It took about 20 Amps of +5V to run.

“It’s got over a quarter million transistors,” I said.
“Yeah, but do they ALL have to be ON at the same time?” He replied..........