Qualcomm Snapdragon 820 Advantages
Better graphics card performance FLOPS (0.3194 TFLOPS vs 0.0208 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 4.2GB/s)
Higher Frequency (2150MHz vs 1400MHz)
Samsung Exynos 7570 Advantages
Lower TDP (4W vs 11W)
Released 9 months late