I have access to a previous generation dual 2.7 Powermac but since it's not actually mine, I was considering buying a dual core 2.3. I do a lot of video editing using the Final Cut Studio. Will I notice much of a difference in performance? I'm assuming the dual core chip will run a little faster than two independent chips, but on paper, 2.3 doesn't look as good as 2.7. And how would the quad compare? Any advice?