Originally posted by gotohamish
Here's the thing...
Apple would NEVER have taken on the G5 if it didn't have a solid plan for it's portable computers. Period.
That said, G5 Powerbooks are either in late-development or ready. There is little question of this. Whether we see them tomorrow is anyone's guess.
It will happen - so I don't understand why people argue that a G5 can't be put into a laptop such as the range Apple currently offer. People said the same about the high clock speed G4s, and they were wrong.
The argument of this thread should be whether the Powerbook range will be updated tomorrow, and whether they're G4 or G5, based on our rumor knowledge.
(Also, there would probably be a bigger heat issue with a 1.4 G4 or Dual G4s than with a G5, which shuts those people up.)
I'm pretty sure the G5 is suitable for the PowerBook. But
at present, I can't figure out how the rest of the architecture can be implemented in a laptop without concessions that would essentially cause the CPU to be hamstrung.
Mainly, the power requirements of the bus and the RAM look to be a challenge. I'd certainly love to find out tomorrow that Apple have a solution, and it's ready to go. No-one can
completely rule out G5 machines tomorrow, but I'm certainly not
expecting them right at this moment.
I think it'd be a shame to see G5 laptops released for the sake of it, without all the other system components in place to let the thing scream. The PowerMac G5 is a no-compromise system - it's as close to perfection as a complete machine can be.
Of course Apple have a roadmap for G5-based PB's. The 970's suitability for high-density blade servers immediately lends itself to laptops. If there are G5 PB's tomorrow, I'll be fascinated to see how the machine's been designed.
Lastly, a brief aside on the design of the PowerMac G5's enclosure. I think most of us now understand that the design is not a sign of Apple having to cope with extraordinary cooling requirements. Personally, I reckon the it was built with the future in mind. It's clear that a lot of R&D money went into the case. It'll be money well spent - that enclosure will be capable of housing many generations of future PowerMacs without expensive modifications, no matter what the form factor or heat dissipation of future processors.
Some genuinely useful information would be how much juice the PM G5's power supply provides to the logic board...