The 6-core Mali T628 GPU is considerably more powerful than the Mali-T604 inside the Nexus 10, and thanks to its GPU compute functionality, it can also take the load off the CPU to perform some general non-graphical tasks, which contributes to the overall efficiency of the chip and allows functionality such as video and image stabilization, facial detection, and more. There's a Mobile Image Compression system integrated into the new Exynos, which allows image display using lesser resources, a great boon for the “Photoshoppers and Instagram addicts.”
There's less new stuff when it comes to the CPU, which seems to have the same big.LITTLE arrangement of four powerful Cortex-A15 cores and four Cortex-A7 low-power cores, so it remains to be seen how the 70 percent greater energy efficiency has been realized. But still, it's a good look at what the Exynos 5420 entails, so be sure to hit the source link and get the full scoop.
Looks like that Galaxy Note III is going to be really powerful, eh?
