An Overview, Continued
This is the diagram of the good old Pentium III. You can see that it is a lot less complex than the Pentium 4 diagram. Still, you might spot the few advantages that P3 has over P4. Don't worry if you don't. I will point them out further down in the text.
Finally here is Athlon. I omitted the micro code ROM and the micro instruction sequencer because I didn't find the time to paint them in there. Please be aware of the fact that Athlon is depending on this unit as well though.