Samsung Exynos 880 Advantages
More modern manufacturing process (8nm vs 14nm)
Lower TDP (5W vs 11W)
Released 4 years and 6 months late
Qualcomm Snapdragon 820 Advantages
Better graphics card performance FLOPS (0.3194 TFLOPS vs 0.2592 TFLOPS )
Higher Frequency (2150MHz vs 2000MHz)