AMD Ryzen 9 5980HX 's Advantages
Higher base frequency (3.3GHz vs 3.2GHz)
AMD Ryzen 5 8540U 's Advantages
Released 2 years and 11 months late
Higher specification of memory (7500 vs 4266)
Larger memory bandwidth (89.6GB/s vs 51.2GB/s)
Newer PCIe version (4.0 vs 3.0)
More modern manufacturing process (4nm vs 7nm)
Lower TDP (30W vs 54W)