> 2) Slow iteration cycle - these TPUv4 were launched in 2020. Maybe Google publishes one gen behind, but that would still be a 2-3 year iteration cycle from v3

> 2) Slow iteration cycle - these TPUv4 were launched in 2020. Maybe Google publishes one gen behind, but that would still be a 2-3 year iteration cycle from v3 to v4. Is that substantially different from the Nvidia release cadence? According to the Wikipedia announcement dates, their last three generations were H100 in March 2022, A100 in May 2020, V100 in March 2017.