Physics: How many transistors on a CPU

As mention in class:

The current AMD dual-core Athlon Processor has 154-233 Million transistor. An Intel Pentium D has 230 million transistors.

In the early 90's the pentium III had 100,000 - 10 million transistors.

In the early 80's the Intel 8086 had 5000-100,000 transistors.

Sources:

AMD

History of Computers