MediaTek Dimensity 7020 Advantages
Larger memory bandwidth (51.2GB/s vs 17.07GB/s)
More modern manufacturing process (6nm vs 7nm)
Lower TDP (4W vs 10W)
Released 2 years and 9 months late
MediaTek Dimensity 800U Advantages
Better graphics card performance FLOPS (0.3264 TFLOPS vs 0.2592 TFLOPS )
Higher Frequency (2400MHz vs 2200MHz)