MediaTek Helio X30 Advantages
Larger memory bandwidth (27.81GB/s vs 14.9GB/s)
Higher Frequency (2600MHz vs 2200MHz)
More modern manufacturing process (10nm vs 11nm)
Lower TDP (5W vs 6W)
Qualcomm Snapdragon 678 Advantages
Better graphics card performance FLOPS (0.3244 TFLOPS vs 0.2176 TFLOPS )
Released 3 years and 10 months late