MediaTek Dimensity 820 Advantages
Better graphics card performance FLOPS (0.416 TFLOPS vs 0.2496 TFLOPS )
Higher Frequency (2600MHz vs 2300MHz)
More modern manufacturing process (7nm vs 14nm)
Released 4 years and 6 months late
Samsung Exynos 8890 Advantages
Larger memory bandwidth (26.82GB/s vs 17.07GB/s)
Lower TDP (5W vs 8W)