MediaTek Dimensity 900 Advantages
Lower TDP (4W vs 6W)
MediaTek Dimensity 8100 Advantages
Better graphics card performance FLOPS (1.309 TFLOPS vs 0.621 TFLOPS )
Larger memory bandwidth (51.2GB/s vs 18.4GB/s)
Higher Frequency (2850MHz vs 2400MHz)
More modern manufacturing process (5nm vs 6nm)
Released 10 months late