Qualcomm Snapdragon 625 Advantages
More modern manufacturing process (14nm vs 20nm)
Released 1 years and 10 months late
Qualcomm Snapdragon 810 Advantages
Better graphics card performance FLOPS (0.3072 TFLOPS vs 0.1248 TFLOPS )
Larger memory bandwidth (25.6GB/s vs 7.46GB/s)