Just curious. Why one is faster? Let's say... use for graphic/video editing. Macbook Pro: 2.33GHz Intel Core 2 Duo 3GB memory 160GB hard drive @ 5400 rpm ATI Mobility Radeon X1600 graphics with 256MB PowerMac G5: Dual 2.7GHz 3GB memory 250GB hard drive @ 7200 rpm NVIDIA GeForce 6800 Ultra DDL with 256MB Also, what about the upcoming new macbook pro with OX 10.5? how is that baby going to perform compare to this PowerMac. Any experts ?