Qualcomm Snapdragon 450 Advantages
Lower TDP (3W vs 9W)
Qualcomm Snapdragon 845 Advantages
Better graphics card performance FLOPS (0.727 TFLOPS vs 0.1152 TFLOPS )
Larger memory bandwidth (29.8GB/s vs 7.46GB/s)
Higher Frequency (2800MHz vs 1800MHz)
More modern manufacturing process (10nm vs 14nm)
Released 6 months late