Qualcomm Snapdragon 855 Advantages
Larger memory bandwidth (34.13GB/s vs 25.6GB/s)
Qualcomm Snapdragon 7 Plus Gen 2 Advantages
Better graphics card performance FLOPS (1.7817 TFLOPS vs 0.8985 TFLOPS )
Higher Frequency (2910MHz vs 2840MHz)
More modern manufacturing process (4nm vs 7nm)
Released 4 years and 3 months late