MediaTek Helio A25 Advantages
Lower TDP (5W vs 6W)
MediaTek Dimensity 8100 Advantages
Better graphics card performance FLOPS (1.309 TFLOPS vs 0.0416 TFLOPS )
Larger memory bandwidth (51.2GB/s vs 13.9GB/s)
Higher Frequency (2850MHz vs 1800MHz)
More modern manufacturing process (5nm vs 12nm)
Released 3 years and 9 months late