Samsung Exynos 980 Advantages
Larger memory bandwidth (34.1GB/s vs 29.8GB/s)
More modern manufacturing process (8nm vs 14nm)
Lower TDP (9W vs 11W)
Released 3 years and 1 months late
Qualcomm Snapdragon 821 Advantages
Better graphics card performance FLOPS (0.3343 TFLOPS vs 0.2621 TFLOPS )
Higher Frequency (2342MHz vs 2200MHz)