Macbook Airs have 20 billion+ transistors, compared to 50 million on the Pentium 4 in the early 2000s. Moore's law is about transistor density, not processor sp

Macbook Airs have 20 billion+ transistors, compared to 50 million on the Pentium 4 in the early 2000s. Moore's law is about transistor density, not processor speed, which is gated by thermal limits.