MediaTek Helio X20 Advantages
Better graphics card performance FLOPS (0.0998 TFLOPS vs 0.024 TFLOPS )
Larger memory bandwidth (12.8GB/s vs 5.34GB/s)
Higher Frequency (2100MHz vs 1400MHz)
More modern manufacturing process (20nm vs 28nm)
Qualcomm Snapdragon 425 Advantages
Released 9 months late