HiSilicon Kirin 955 Advantages
Lower TDP (5W vs 6W)
HiSilicon Kirin 980 Advantages
Better graphics card performance FLOPS (0.5184 TFLOPS vs 0.1152 TFLOPS )
Higher Frequency (2600MHz vs 2500MHz)
More modern manufacturing process (7nm vs 16nm)
Released 2 years and 4 months late