AMD Ryzen 7 7730U 's Advantages
Higher specification of memory (LPDDR4x-4267 vs DDR5-5200)
Lower TDP (15W vs 55W)
AMD Ryzen 9 7940HX 's Advantages
Released 8 months late
Better graphics card performance
Larger memory bandwidth (83.2GB/s vs 51.2GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (2.4GHz vs 2.0GHz)
Larger L3 cache size (64MB vs 16MB)
More modern manufacturing process (5nm vs 7nm)