"Core 2" means a 64-bit CPU. "Core" without the "2" means a 32-bit CPU. More bits = faster.
"Duo" means two such cores (dual CPUs). "Solo" would mean one core. More cores = faster.
So you've got the best combo for speed.
Thanks, dayglored. At least now I know something about my new computer.
I want a copy of Street Atlas but I need Boot Camp to get it. Doubt that’s possible because I suspect you need two processors and I only have one.