Samsung Exynos 9810 Advantages
Larger memory bandwidth (28.7GB/s vs 17GB/s)
Higher Frequency (2900MHz vs 2400MHz)
Lower TDP (5W vs 6W)
Samsung Exynos 1280 Advantages
Better graphics card performance FLOPS (0.487 TFLOPS vs 0.3706 TFLOPS )
More modern manufacturing process (5nm vs 10nm)
Released 4 years and 2 months late