Qualcomm Snapdragon 636 Advantages
Lower TDP (5W vs 9W)
Samsung Exynos 9820 Advantages
Better graphics card performance FLOPS (0.607 TFLOPS vs 0.1843 TFLOPS )
Larger memory bandwidth (33.4GB/s vs 5.3GB/s)
Higher Frequency (2730MHz vs 1800MHz)
More modern manufacturing process (8nm vs 14nm)
Released 1 years and 1 months late