Qualcomm Snapdragon 665 Advantages
Better graphics card performance FLOPS (0.2432 TFLOPS vs 0.1664 TFLOPS )
Larger memory bandwidth (14.9GB/s vs 5.3GB/s)
More modern manufacturing process (11nm vs 14nm)
Released 1 years and 11 months late
Qualcomm Snapdragon 630 Advantages
Higher Frequency (2200MHz vs 2000MHz)