Originally posted by Puppies
Why? 25% faster clock speed isnt bad! What were you expecting? I mean yeah, the G4 in general has been a bit of a disappointment, but this is the same kind of leap each PowerBook revision has gotten.
Exactly. The G4 has been a disappointment. It is time to move on to the G5. Now.
Originally posted by Puppies
Yes. The new PowerBooks will probably go to at least 167mhz, if not 200mhz system busses. Thats a 25-50% boost over the current 15 models bus.
167...old news. Very old news. If a Trabant were given a new 1.8L Honda engine, would that be enough to make it a nice car? 200 would be nicer, but there doesn't seem to be any indication that this is actually happening. In fact, I have seen reports to the contrary, right here at macrumors--reports that Moto couldn't up the bus on the 7457 higher than even the existing paltry 167.
Originally posted by Puppies
youll probably see a 25-300% boost in performance over the old PowerBooks. Thats nothing to sneeze at IMO.
LOL. No way. That is highly optimistic. The system bus will almost certainly remain at 167, and the boost you will see is between 0 and 25% (i.e. between 0% bus and 25% CPU). In fact, it will likely remain closer to 0% most of the time. Most of the computer's time is spent in a non-CPU-bound state, especially when multitasking. CPUs spend ~70% of their time moving data back and forth to memory.
As far as the GPU upgrade, my guess is that OSX (specifically, QE) does not make extremely heavy use of OpenGL. This guess is based on the fact that OSX needs to be able to run smoothly on machines with much lesser graphics hardware. If OSX had game-like OpenGL usage (the kind of usage that would benefit from a faster GPU), the GUI would absolutely crawl on iMacs etc.
It will be somewhat faster in games,
if the GPU is even updated (there seems to be some doubt of even that happening). But games also make very heavy usage of the memory bus, so the gains in game frame rates will not be as much as the theoretical GPU upgrade alone might imply.