Qualcomm Snapdragon 626 Advantages
Higher Frequency (2200MHz vs 2150MHz)
Released 11 months late
Qualcomm Snapdragon 820 Advantages
Better graphics card performance FLOPS (0.3194 TFLOPS vs 0.1248 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 7.5GB/s)