Samsung Exynos 9825 Advantages
Better graphics card performance FLOPS (0.6515 TFLOPS vs 0.0493 TFLOPS )
Higher Frequency (2730MHz vs 1800MHz)
More modern manufacturing process (7nm vs 14nm)
Released 6 months late
Samsung Exynos 7904 Advantages
Lower TDP (5W vs 9W)