Qualcomm Snapdragon 870 Advantages
Better graphics card performance FLOPS (1.3721 TFLOPS vs 0.284 TFLOPS )
Larger memory bandwidth (44GB/s vs 17GB/s)
Higher Frequency (3200MHz vs 2400MHz)
Qualcomm Snapdragon 680 Advantages
More modern manufacturing process (6nm vs 7nm)
Released 9 months late