Samsung Exynos 7880 Advantages
Lower TDP (4W vs 11W)
Released 1 years and 2 months late
Qualcomm Snapdragon 820 Advantages
Better graphics card performance FLOPS (0.3194 TFLOPS vs 0.0912 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 12.8GB/s)
Higher Frequency (2150MHz vs 1900MHz)