I won't duplicate ready web content but the highlights are the better power management, L2 Cache management and EM64T (64-bit.)
Remember we don't know make and models of the laptops so the advantage of the CPU could dim in light of the entire package or price.
Looking at buying a new laptop for home office /general use. I'm confused about processor speeds and would be grateful for guidance. One laptop has Intel T5250 - 1.5HGz, 667MHz FSB and the other has T2050 - 1.6GHz, 533 MHz FSB. Which is the better processor? Thanks.