anxcon: No he does mean 8 cores on one computer. I have one too.

Toxe: Your render is so short that you gain little from all 8 cores. As I understand it, it takes also processing power and time to distribute the task for multithreading applications. So in your case this is taking longer then the processing it self.

I had a project that took 47 hours to render on my dual 2.3 G5. It rendered in a little bit under 8 Hours on my MacPro. I love my Mac. :)