I was wondering when people consider themselves to have a new PC. Technically I’ve had the same PC for close to 20 years now, but every part’s been upgraded several times over.
I figure everyone’s got a different mind about it. For me, I’d have to say when all of the big three—CPU, GPU, mobo—have completed a phase, my brain thinks of the previous setup as “the old PC”.
I say, when you reinstall the OS. If you transfer data instead of transferring the entire OS, that’s when. When it’d feel appropriate to get a new hostname.