MediaTek Helio P20 Advantages
Lower TDP (5W vs 8W)
MediaTek Dimensity 820 Advantages
Better graphics card performance FLOPS (0.416 TFLOPS vs 0.0576 TFLOPS )
Larger memory bandwidth (17.07GB/s vs 12.8GB/s)
Higher Frequency (2600MHz vs 2300MHz)
More modern manufacturing process (7nm vs 16nm)
Released 4 years and 3 months late