AMD Ryzen 5 5625U 's Advantages
Higher specification of memory (LPDDR4x-4267 vs DDR5-5200)
Lower TDP (10W vs 65W)
AMD Ryzen 9 7900 's Advantages
Released 1 years 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 (3.7GHz vs 2.3GHz)
Larger L3 cache size (64MB vs 16MB)