Originally posted by JavaCoder
I know that buying a comodity wintel laptop is a totally different value proposition, but I could buy one today with what I still OWE on the WallStreet (which, after many years of faithful service, does no longer boot).
I know this sounds insensitive but you but you can't blame Apple for the decision you made on financing the thing.
But my point really is that Apple has to be on the cusp of making an major, evolutionary change to a different CPU. Wheter it's a departure from the PPC family or the switch to 64 bit. This is a different, more fundamental, change than just roadmaping where, for example, commodity x86 chips are going to be a year down the road.
Number one, I don't think Apple is going to move away from the PowerPC architecture. Number two, the "switch to 64 bit" isn't really that big of a deal. Sure, you can use more memory and do "big math" with large integers. However, the PowerPC specification has been 64 bit from the get go. It has just been the case that all implementations of PowerPC so far have been 32 bit. The move to a 64 bit implementation isn't inherently "better". Heck, you could have a 64 bit G4 if Mot would design one. It would work with large integers and large addresses but it would still perform the same as the trusty 32 bit G4 we have right now.
The magic that's going on right now is that IBM has taken an interest again in the PowerPC platform. Sure sure, they had been making revisions to the PPC750FX but their big R&D money was going into the POWER series where they make the big money. All of the sudden, blade computing is in vogue and they decide to let the POWER4 technology trickle down into the PowerPC line.
As long as IBM keeps letting this trickle-down effect happen, PowerPC should stay competitive. Heck, I've read interviews with members of the POWER design team where they've said their goal is not to let Itanium survive. That's a pretty hefty task but IBM hasn't been behind the curve thus far, so I'm fairly confident in their abilities to provide top notch performance from the POWER/PowerPC line.
Other than POWER/PowerPC, the only other viable long-term choices are x86(-64) and Itanium. If Apple moves to x86 or x86-64, there is little chance for them to differentiate themselves from commodity hardware on a value proposition. There is also no chance in hell that they'll ever get ahead of the commodity market in performance (take into account their past performance up against Power Computing). And, if they moved to Itanium, you'd be paying the price of a loaded G4 just for the damn microprocessor. With PowerPC though, they have a chance to be different, and they have a chance to regain some ground performance-wise. Plus, if IBM's claims about the POWER5 performance are true, PowerPC may even take back the speed crown in the desktop arena someday.
And this stuff is all taken out of the platform context. Just imagine the amount of flack from developers if Apple were to try and do a multi-platform strategy with OS X. It just doesn't make sense for them to move anywhere with their current business model.