HiSilicon Kirin 658 Advantages
Higher Frequency (2350MHz vs 2000MHz)
Lower TDP (5W vs 9W)
Qualcomm Snapdragon 670 Advantages
Better graphics card performance FLOPS (0.3584 TFLOPS vs 0.0576 TFLOPS )
More modern manufacturing process (10nm vs 16nm)
Released 1 years and 5 months late