AMD Ryzen 3 7320U 's Advantages
Higher specification of memory (5500 vs 5200)
Higher base frequency (2.4GHz vs 2.3GHz)
Lower TDP (15W vs 55W)
AMD Ryzen 9 7945HX3D 's Advantages
Released 6 months late
Larger memory bandwidth (83.2GB/s vs 44.0GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (128MB vs 4MB)
More modern manufacturing process (5nm vs 6nm)