Bold is Mine 2.5GHZ ...not that fast

The Cortex-A72 delivers 3.5x the sustained performance in the smartphone power envelope over 2014 28nm Cortex-A15 processor designs. The processor features several major micro-architectural improvements which build on the current generation of ARMv8-A cores. The enhancements in floating point, integer and memory performance improve the execution of every major class of workload.

The processor is optimized for the 16nm FinFET process technology, enabling the Cortex-A72 to clock up to 2.5GHz in the mobile power envelope and leading to even higher total delivered performance.

On top of these key performance improvements, the Cortex-A72 CPU also benefits from significantly lower power consumption. This improved efficiency combined with the 16nm FinFET process technology enables the Cortex-A72 processor to achieve a 75% power reduction in representative premium mobile workloads.