The temperature inversion effect is more pronounced at 16nm (Pi 5) than older nodes. This results in high VT cells performing better when warmer, the opposite o

The temperature inversion effect is more pronounced at 16nm (Pi 5) than older nodes. This results in high VT cells performing better when warmer, the opposite of what we are used to. At the "normal" operating conditions (temp and frequency), this shouldn't be noticeable but when your at the absolute frequency limit it's not ideal for your critical path (where you normally use HVT cells) to get any slower. Perhaps it's related to this.