MediaTek Dimensity 900 Advantages
Better graphics card performance FLOPS (0.621 TFLOPS vs 0.3343 TFLOPS )
Higher Frequency (2400MHz vs 2342MHz)
More modern manufacturing process (6nm vs 14nm)
Lower TDP (4W vs 11W)
Released 4 years and 9 months late
Qualcomm Snapdragon 821 Advantages
Larger memory bandwidth (29.8GB/s vs 18.4GB/s)