Qualcomm Snapdragon 660 Advantages
Better graphics card performance FLOPS (0.2176 TFLOPS vs 0.1536 TFLOPS )
Higher Frequency (2200MHz vs 1800MHz)
Qualcomm Snapdragon 460 Advantages
Larger memory bandwidth (13.91GB/s vs 13.9GB/s)
More modern manufacturing process (11nm vs 14nm)
Lower TDP (3W vs 5W)
Released 2 years and 8 months late