der8auer recently did a 3 part video on YouTube where he cut up AMD and Intel chips and looked at the transistors with an electron microscope. It sheads some light on meaning (or non-meaning) of the node names. Is also really interesting;
der8auer is basically the patron saint of PC overclocking, highly recommend his coverage of new hardware because he goes straight to doing interesting stuff and skips the usual review stuff that everyone else repeats.
I think we left the holy land of pc overclocking long ago.. this dude just showed us chemical coating of transistors.. Even Applied Science would be jealous.