Qualcomm Snapdragon 678 Advantages
Lower TDP (6W vs 8W)
Qualcomm Snapdragon 8 Elite Advantages
Better graphics card performance FLOPS (3.3792 TFLOPS vs 0.3244 TFLOPS )
Larger memory bandwidth (42.7GB/s vs 14.9GB/s)
Higher Frequency (4320MHz vs 2200MHz)
More modern manufacturing process (3nm vs 11nm)
Released 3 years and 10 months late