I also remember the die shrink of the Tualatin being huge too! I didn't realize the Pentium M had anything to do with the P4. I thought it was all P3/Tualatin linked. Great info! Still to this day my favorite Intel chip is Conroe. And I loved the Q6600. While not a true quad core (two dual cores in one package), it was an extremely fun and powerful chip!Good riddance to Pentium 4chips!