Even max TDP doesn't correlate well to energy efficiency in normal usage. Like, this chip could never use more than 15W and still be less energy efficient, if l

Even max TDP doesn't correlate well to energy efficiency in normal usage. Like, this chip could never use more than 15W and still be less energy efficient, if lightly threaded workloads clock up to drain the full 15W. Which a boost clock of 5.1GHz strongly suggests might happen.