AMD Ryzen 7 7730U's Advantages
Better graphics card performance
Higher specification of memory (LPDDR4x-4267 vs DDR5-5200)
Lower TDP (15W vs 45W)
AMD Ryzen 7 7745HX's Advantages
Larger memory bandwidth (83.2GB/s vs 51.2GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (3.6GHz vs 2.0GHz)
Larger L3 cache size (32MB vs 16MB)
More modern manufacturing process (5nm vs 7nm)