It's not having a 1Ghz PPC that will bring performance; it's the faster bus. What the heck are you going to do with 1GHz if the bus chokes it to 133MHz (not counting inefficient x86)?
CPU registers aren't forever, neither is cache. The demanding stuff needs bandwidth and it's the demanding stuff we want to run faster. But then there's people who thinks they really can get a 10 times faster computer by switching from a 1GHz to a 10GHz processor, still using the same 100MHz bus.
It would be fun having a cutting edge Amiga using f.ex. 333MHz DDR as main RAM (128-bit wide) and some nice GFX chip (Matrox perhaps) soldered to the mobo. Not excluding the option of having some 3D monster working seamlessly toghether with the 2D Matrox through an AGP bus.
