MediaTek Helio X30 Advantages
Higher Frequency (2600MHz vs 2580MHz)
Lower TDP (5W vs 6W)
HiSilicon Kirin 985 Advantages
Better graphics card performance FLOPS (0.652 TFLOPS vs 0.2176 TFLOPS )
Larger memory bandwidth (34.1GB/s vs 27.81GB/s)
More modern manufacturing process (7nm vs 10nm)
Released 3 years and 2 months late