Qualcomm Snapdragon 450 Advantages
Lower TDP (3W vs 9W)
Samsung Exynos 990 Advantages
Better graphics card performance FLOPS (1.126 TFLOPS vs 0.1152 TFLOPS )
Larger memory bandwidth (44GB/s vs 7.46GB/s)
Higher Frequency (2730MHz vs 1800MHz)
More modern manufacturing process (7nm vs 14nm)
Released 2 years and 4 months late