MediaTek Dimensity 820 Advantages
Larger memory bandwidth (17.07GB/s vs 17GB/s)
Higher Frequency (2600MHz vs 2400MHz)
Qualcomm Snapdragon 780G Advantages
Better graphics card performance FLOPS (0.7526 TFLOPS vs 0.416 TFLOPS )
More modern manufacturing process (5nm vs 7nm)
Lower TDP (5W vs 8W)
Released 10 months late