Samsung Exynos 7870 Advantages
Lower TDP (3W vs 8W)
Samsung Exynos 9610 Advantages
Better graphics card performance FLOPS (0.0918 TFLOPS vs 0.0224 TFLOPS )
Higher Frequency (2300MHz vs 1600MHz)
More modern manufacturing process (10nm vs 14nm)
Released 2 years and 1 months late