The Galaxy S IV will be powered by Samsung's Exynos 5 Octa, the world's first 8-core mobile processor, according to some published reports. Unveiled in January at CES 2013, the ARM-based Octa has four large Cortex-A15 processor cores, which are built for high-performance tasks such as HD video streaming and graphics-intensive gaming. Four smaller ARM Cortex-A7 cores, optimized for low power consumption, handle the bulk of mobile chores. The benefit for mobile users is twice the performance at half the power consumption, or so Samsung and ARM claim. Impressive-sounding, yes. But will the average smartphone user see real-world improvements?