AMD Ryzen 5 7520U 's Advantages
Higher specification of memory (LPDDR5-5500 vs DDR5-5200)
Higher base frequency (2.8GHz vs 2.4GHz)
Lower TDP (15W vs 55W)
AMD Ryzen 9 7940HX 's Advantages
Released 1 years and 4 months late
Better graphics card performance
Larger memory bandwidth (83.2GB/s vs 44.0GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (64MB vs 4MB)
More modern manufacturing process (5nm vs 6nm)