Does anyone know why would it need 140w power adapter? I thought the M1 chips are supposed to be more power efficient than the Intel ones, and they never needed

Does anyone know why would it need 140w power adapter? I thought the M1 chips are supposed to be more power efficient than the Intel ones, and they never needed >100w power adapter in the Intel days. The new USB-C spec to support >100w power delivery was just out, I really hope they are following that spec in their new 140w USB-C power adapter.