Instructions per clock is more telling. 15% more IPC looks very impressive. "Arm is claiming that, based on its pre-silicon simulation numbers, the Cortex-X4

Instructions per clock is more telling. 15% more IPC looks very impressive. "Arm is claiming that, based on its pre-silicon simulation numbers, the Cortex-X4 will deliver a 15% IPC uplift at iso-frequency and iso-bandwidth versus the Cortex-X3 used in last year's flagship Android SoCs" (link above) https://www.anandtech.com/print/18871/arm-unveils-armv92-mobile-architecture-cortex-x4-a720-and-a520-64bit-exclusive https://www.anandtech.com/print/18871/arm-unveils-armv92-mob...