To be honest, the case is still the original one, but almost every other part has since been replaced. Now, I’ve taken it back to the shop where I bought it 20 years ago and asked them to upgrade the motherboard, CPU, and memory - the last of the original parts.
So, is it still the same computer?
I also like that I can just keep replacing parts on an existing product rather than buying an entirely new device each time. That’s exceedingly rare feature these days.
I vote for same computer. Mine is definitely still a Packard Bell. Each time I replace a part, that part became part of the original and I’ve never done a 100% replacement in a single session. I think the longest lived original part was the 3.5" floppy drive. I only remove it because I bought a case with no slot for an externally accessible drive.