This article says 40nm: https://taiwanwireservice.com/tsmc-40-nanometer-chip-production-line-in-tainan-hit-by-power-outage/ https://taiwanwireservice.com/tsmc-4

This article says 40nm: https://taiwanwireservice.com/tsmc-40-nanometer-chip-production-line-in-tainan-hit-by-power-outage/ https://taiwanwireservice.com/tsmc-40-nanometer-chip-product... Off topic, but the original article also talks about how the factory is trucking in water in the midst of a bad drought. Hah, insane. It reminds me of how the price of corn shot up when corn-based biofuels became a trend as oil prices were skyrocketing. (I guess that was 2007). When you'd rather burn your food to power machines, the world has gone a bit mad...