Quote Originally Posted by Sam_oslo View Post
I've been trying to raise the question, where does the line go for a architectural changes to become a new generation? But nobody has given a clear answer. Could you cast some light on it?
No, there is no hard line. Architectures are so complex that sometimes a small change in one part could result in a major improvement in performance, while major changes to another part might only make minimal difference. There isn't going to be any such hard definition and often it just depends on what the company wants to call a new generation.

Personally I would call 68xx an evolution of the evergreen generation, and did so shortly before launch based on the rumors. We will have to see about Cayman. But as we know, in computers as in biology, evolution is driven by small changes in successive generations (to twist the analogy a bit) .