Samsung Exynos 880 Advantages
Lower TDP (5W vs 6W)
Released 1 years and 9 months late
HiSilicon Kirin 980 Advantages
Better graphics card performance FLOPS (0.5184 TFLOPS vs 0.2592 TFLOPS )
Higher Frequency (2600MHz vs 2000MHz)
More modern manufacturing process (7nm vs 8nm)