Samsung Exynos 980 Advantages
Better graphics card performance FLOPS (0.2621 TFLOPS vs 0.2496 TFLOPS )
Larger memory bandwidth (34.1GB/s vs 26.82GB/s)
More modern manufacturing process (8nm vs 14nm)
Released 3 years and 10 months late
Samsung Exynos 8890 Advantages
Higher Frequency (2300MHz vs 2200MHz)
Lower TDP (5W vs 9W)