MediaTek Dimensity 8200 Advantages
Lower TDP (6W vs 15W)
MediaTek Dimensity 9400 Advantages
Better graphics card performance FLOPS (4.9521 TFLOPS vs 1.442 TFLOPS )
Larger memory bandwidth (85.3GB/s vs 51.2GB/s)
Higher Frequency (3630MHz vs 3100MHz)
More modern manufacturing process (3nm vs 4nm)
Released 1 years and 10 months late