Samsung Exynos 9820 Advantages
Better graphics card performance FLOPS (0.607 TFLOPS vs 0.0912 TFLOPS )
Larger memory bandwidth (33.4GB/s vs 12.8GB/s)
Higher Frequency (2730MHz vs 1900MHz)
More modern manufacturing process (8nm vs 14nm)
Released 1 years and 10 months late
Samsung Exynos 7880 Advantages
Lower TDP (4W vs 9W)