Qualcomm Snapdragon 820 Advantages
Better graphics card performance FLOPS (0.3194 TFLOPS vs 0.0918 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 11.9GB/s)
Samsung Exynos 9609 Advantages
Higher Frequency (2200MHz vs 2150MHz)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (9W vs 11W)
Released 3 years and 6 months late