AMD Ryzen 7 3700U 's Advantages
Lower TDP (35W vs 54W)
AMD Ryzen 5 8645HS 's Advantages
Released 4 years and 11 months late
Better graphics card performance
Higher specification of memory (7500 vs 2400)
Larger memory bandwidth (89.6GB/s vs 35.76GB/s)
Newer PCIe version (4.0 vs 3.0)
Higher base frequency (4.3GHz vs 2.3GHz)
Larger L3 cache size (16MB vs 4MB)
More modern manufacturing process (4nm vs 12nm)