Qualcomm Snapdragon 778G Advantages
Larger memory bandwidth (25.6GB/s vs 13.9GB/s)
Higher Frequency (2400MHz vs 2000MHz)
More modern manufacturing process (6nm vs 11nm)
Released 1 years and 4 months late
Qualcomm Snapdragon 662 Advantages
Lower TDP (4W vs 5W)