Samsung Exynos 850 Advantages
Lower TDP (3W vs 6W)
Samsung Exynos 1280 Advantages
Better graphics card performance FLOPS (0.487 TFLOPS vs 0.0394 TFLOPS )
Higher Frequency (2400MHz vs 2000MHz)
More modern manufacturing process (5nm vs 8nm)
Released 1 years and 10 months late