Samsung Exynos 7884B Advantages
Released 2 years and 7 months late
MediaTek Helio X30 Advantages
Better graphics card performance FLOPS (0.2176 TFLOPS vs 0.0493 TFLOPS )
Larger memory bandwidth (27.81GB/s vs 7.8GB/s)
Higher Frequency (2600MHz vs 1560MHz)
More modern manufacturing process (10nm vs 14nm)