sorta the same as the difference between an amd cpu running at 1.8ghz being equal to a pentium 4 cpu running at 3.0 ghz..
cpu clock isn't everything.. 1 cycle on 1 system can do a lot more than 1 cycle on a diff system...
anyways.. stay away from pentium 4 if you're lookin at laptops..
the new core duos look neat! if core duo is too much $ then i guess you could settle for core solo or pentium M...
"Is virtue a thing remote? I wish to be virtuous, and lo! Virtue is at hand." -Confucius