Qualcomm Snapdragon 810 Advantages
Better graphics card performance FLOPS (0.3072 TFLOPS vs 0.1248 TFLOPS )
Larger memory bandwidth (25.6GB/s vs 7.5GB/s)
Qualcomm Snapdragon 626 Advantages
Higher Frequency (2200MHz vs 2000MHz)
More modern manufacturing process (14nm vs 20nm)
Released 2 years and 6 months late