The course "Computer Systems Architecture" at Queen's University uses "Computer Organization and Design: The Hardware/Software Interface" by Patterson and Henne

The course "Computer Systems Architecture" at Queen's University uses "Computer Organization and Design: The Hardware/Software Interface" by Patterson and Hennessy. It's a 400-level course in the computer and electrical engineering department. I can recommend it. Most chapters in it have a "Real Stuff" section where they look at a real world CPU and compare it with the contents of the book to see how the theory actually ends up in practice.