Tilmitt said:
1.84Ghz with twice the L2 cache and a faster FSB.
Vaporware only because Apple decided not to use it. It's there. You can buy the G4's I mentioned from Freescale. IBM has the new G5's on offer, Apple won't take them because it will ruin the dramatic "performance increase" when they ship their other Intel macs. Look I don't pretend that core chips are slow or anything, they're performance is brilliant. Better than the G4 yes. Better enough to switch based on what the G4 can offer, most definitely not. And on top of that they are a mess cause they are x86.
PowerPC atm is not faster than Intel in general, but I would strongely argue that the difference is minimal when you actually use the PowerPC chips that are available and that the switch is purely for the reasons I outlined above. And I lament that Macs transition to such a backward mangled architecture. Humanity is capable of better than tying its hands to a backwards compatibilty driven relic.
The PowerPC architecture is elegant, but Motorola and IBM have mostly failed in bringing the architecture to its full potential. A few things killed PowerPC.
1. Faultering GHz numbers. Obviously, this isn't the only thing that matters in a computer, but when consumers could see a 500mhz G4 compared to a 1.8+ Ghz P4, they were wondering just how efficient that PPC could be.
2. Starved FSB. This has always been a problem, and even now compared to the DuoCore and the G5, the G4 has been lame.
3. Higher wattage. While the G4 was very efficient as it matured, it was limited by the above, and while the G5 fixed the above, it also used a lot of power and created a lot of heat. The heatsinks and fans in a G5 tower and iMac could never be replicated in a laptop. And laptops are the future of computing.
4. DuoCore. Two cores is impressive, especially when it can be made small and light enough to fit into a laptop that can compete with a large and more expensive desktop.
As much as I like the PPC, I think Apple needed to transition to x86 because it removes all the marketing drag, and the performance drag, all the arguments about PPC versus x86. Now, Apple can compete up front with others and be in line for the same video cards as anyone else.
The downside is an ugly architecture and the possibility of simplier attacks on the system. But the upside is market-share, performance, and a future with a supplier that is dedicated to the platform, unlike Motorola and IBM.