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”.
If I had to limit it to physically, I’d say the motherboard. It’s the only thing in the box that everything has to be compatible with. Everything else is the extension.
Personally, I believe in a machine spirit. It’s a nebulous concept and it muddies the water here, but really the object is new when it no longer feels like the old. If I install a new is some day and my fans don’t breathe the same, my lights don’t blink like they did, or the chirp of my drives sounds alien, then I know I’ve lost the ghost and will have to learn a whole personality. Same is true for all my objects.
The machine spirits need to be kept pleased. Praise be to the Omnissiah.