Let me answer thiso ne more detailed. There' the clock (Ex: 3GHZ) and clocks per cycles. Clocks per cycles, I dunno what it means, but more is better. The Core 2 Duo has more.
Pentium D:
FSB = 533 or 800
Clock ratio 2.8-3.4+
Clock per cycles = (Randomly generated number) 5
Core 2 Duo
FSB = 1066
Clock ratio = 1.8-2.4ish
Clock per cycles = (Randomly generated number) 15-25.