Why am I not seeing a drastically noticeable increase in performance and speed over my previous G3 processor?
The G4 receives the signals at the same speed as the G3. Basic, general performance is MHz for MHz with the G3. The additional performance is driven by FPU and the velocity engine, AltiVec, which requires custom drivers on an application-by-application basis for additional performance. As more software is AltiVec enabled, the performance benefits of the G4 will be become more and more apparent.