Have an 8.5 year old iMac G5 from 2004 sees heavy use and has stabilized.
At one point, it needed intervention with a soldering iron to replace bad capacitors on the logic board -- a scandal in the electronics parts industry at the time, as one manufacturer used a bad formulation for the capacitors that worked their way into the iMac.
Also an even older 9 year old eMac that looks and acts like new, no problems (though lightly used over the years).
It appears they could both continue indefinately. The big issue was the jump to Intel CPU's gradually causing obsolescence as most new and updated web protocols were implemented that supported Intel only (Adobe Flash for example). A few things on the web don't work well anymore on the older machines because of this, but it's not bad even now.
Looking ahead, I'm wondering what's left to cause such a large break in the future ... the web is stabilizing and without a major CPU architecture change what new protocols that do come along should be adaptable to older machines. I suppose a Mac file system change could whammy things up a bit.
At one point, it needed intervention with a soldering iron to replace bad capacitors on the logic board -- a scandal in the electronics parts industry at the time, as one manufacturer used a bad formulation for the capacitors that worked their way into the iMac.
Also an even older 9 year old eMac that looks and acts like new, no problems (though lightly used over the years).
It appears they could both continue indefinately. The big issue was the jump to Intel CPU's gradually causing obsolescence as most new and updated web protocols were implemented that supported Intel only (Adobe Flash for example). A few things on the web don't work well anymore on the older machines because of this, but it's not bad even now.
Looking ahead, I'm wondering what's left to cause such a large break in the future ... the web is stabilizing and without a major CPU architecture change what new protocols that do come along should be adaptable to older machines. I suppose a Mac file system change could whammy things up a bit.