Samsung Exynos 9820 Advantages
Better graphics card performance FLOPS (0.607 TFLOPS vs 0.3706 TFLOPS )
Larger memory bandwidth (33.4GB/s vs 28.7GB/s)
More modern manufacturing process (8nm vs 10nm)
Released 10 months late
Samsung Exynos 9810 Advantages
Higher Frequency (2900MHz vs 2730MHz)
Lower TDP (5W vs 9W)