Is there any noticeable difference between a 2ghz intel core 2 duo and 2 ghz intel core duo? Or a theoretical difference?

I'm assuming you guys know that I'm talking about for final cut pro editing purposes.

"Modest" improvements according to Primate Labs (http://www.primatelabs.ca/blog/2007/08/mac-mini-performance-august-2007/)' benchmarks.

Of course, they never tested FCP.