Yeah, I wondered this actually when I saw an advertisements for laptops running Pentium D. Since it was still a dual core archetecture, I was wondering what it was like compared with the new Conroes.
Nah, the Smithfield core was true dual-core like the Athlon X2's were. The Presler was the "half-assed" dual-processor core, since it was two seperate CPU cores linked by the FSB; whereas true dual-core is two full processing cores in one die.