Qualcomm Snapdragon 870 Advantages
Better graphics card performance FLOPS (1.3721 TFLOPS vs 0.024 TFLOPS )
Larger memory bandwidth (44GB/s vs 5.34GB/s)
Higher Frequency (3200MHz vs 1400MHz)
More modern manufacturing process (7nm vs 28nm)
Released 4 years and 11 months late
Qualcomm Snapdragon 425 Advantages
Lower TDP (5W vs 6W)