AMD Ryzen 9 9955HX 's Advantages
Released 1 years and 7 months late
Newer PCIe version (5.0 vs 4.0)
Larger L3 cache size (64MB vs 16MB)
AMD Ryzen 9 Pro 7940HS 's Advantages
Better graphics card performance
Higher specification of memory (7500 vs 5600)
Higher base frequency (4.0GHz vs 2.5GHz)
Lower TDP (54W vs 75W)