For comparison I was trying to nail down what Intel's 7nm process is, but I've found answers between 120nm and 215nm. If anyone knows, that'd be an interesting comparison.
Intel's prior CEO, Brian Krzanich, mentioned that 7-nanometer will have "2.4x the compaction ratio" of 10 nm. This puts the 7-nanometer node at around 202-250 million transistors per square millimeter.
