HiSilicon Kirin 655 Advantages
Higher Frequency (2120MHz vs 2000MHz)
Lower TDP (5W vs 10W)
Unisoc Tiger T618 Advantages
Better graphics card performance FLOPS (0.0816 TFLOPS vs 0.0576 TFLOPS )
More modern manufacturing process (12nm vs 16nm)
Released 2 years and 8 months late