Qualcomm Snapdragon 750G Advantages
Lower TDP (5W vs 6W)
Qualcomm Snapdragon 870 Advantages
Better graphics card performance FLOPS (1.3721 TFLOPS vs 0.4224 TFLOPS )
Larger memory bandwidth (44GB/s vs 17GB/s)
Higher Frequency (3200MHz vs 2200MHz)
More modern manufacturing process (7nm vs 8nm)