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<blockquote data-quote="drothgery" data-source="post: 977943" data-attributes="member: 360">It's more likely that the next spin of PowerBooks will have Moto's latest, and last, G4. The G5s are fairly power-hungry, compared to G4s (or Pentium-Ms).And I have to think that IBM is engaging in wishful thinking in saying that they'll hit 3 GHz by next summer. I'm sure they'd like to. And just maybe, if everything goes right, they'll be able to. But the odds aren't good.Going much beyond 2 GHz is going to require some redesign to lock the front-side bus; right now it's 1/4 clock speed DDR, and that just won't scale. 500 MHz DDR (advertized as a 1000 MHz FSB, much like Intel's 200 MHz QDR is advertized as an 800 MHz FSB) is pushing what other components can handle. Besides, it's sub-optimal for the memory clock to be out of sync with the front-side bus. But that's pretty trivial.The more important issues are with manufacturing. There's no way they'll be able to fab a 3 GHz G5 at .13 micron. I'd go so far as to say that it's doubtful they'll be able to fab a 2.5 GHz G5 at .13 micron. And it's unlikely that anyone other than Intel will be making a significant volume of CPUs at .09 micron by mid-2004.</blockquote>

[QUOTE="drothgery, post: 977943, member: 360"] It's more likely that the next spin of PowerBooks will have Moto's latest, and last, G4. The G5s are fairly power-hungry, compared to G4s (or Pentium-Ms). And I have to think that IBM is engaging in wishful thinking in saying that they'll hit 3 GHz by next summer. I'm sure they'd like to. And just maybe, if everything goes right, they'll be able to. But the odds aren't good. Going much beyond 2 GHz is going to require some redesign to lock the front-side bus; right now it's 1/4 clock speed DDR, and that just won't scale. 500 MHz DDR (advertized as a 1000 MHz FSB, much like Intel's 200 MHz QDR is advertized as an 800 MHz FSB) is pushing what other components can handle. Besides, it's sub-optimal for the memory clock to be out of sync with the front-side bus. But that's pretty trivial. The more important issues are with manufacturing. There's no way they'll be able to fab a 3 GHz G5 at .13 micron. I'd go so far as to say that it's doubtful they'll be able to fab a 2.5 GHz G5 at .13 micron. And it's unlikely that anyone other than Intel will be making a significant volume of CPUs at .09 micron by mid-2004. [/QUOTE]

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