Is that a minor advantage? I would think that, the smaller the nodes get, the larger the impact of a 1nm difference. Because transistors have area, I think the math, in ≈transistor count would be 3nm:4nm = ⅓²:¼², and that’s 1,777… so a 3nm node could have 75% more transistors on a given die area than a 4nm one (roughly).
4nm -> 3nm no longer means size goes down as a result directly ratiometricly. You have to look at what TSMC is claiming for their improvements. They're claiming 5nm -> 3nm is a 70% density improvement (I can't find any 4nm -> 3nm claims)... so 4->3 must be much less.
Also, most folks seem to have gone directly from 5nm to 3nm, and skipped 4nm altogether.
Is that a minor advantage? I would think that, the smaller the nodes get, the larger the impact of a 1nm difference. Because transistors have area, I think the math, in ≈transistor count would be 3nm:4nm = ⅓²:¼², and that’s 1,777… so a 3nm node could have 75% more transistors on a given die area than a 4nm one (roughly).