AMD Ryzen 9 6900HX 's Advantages
Higher specification of memory (LPDDR5-6400 vs DDR5-5600)
AMD Ryzen 9 8940H 's Advantages
Released 2 years late
Better graphics card performance
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (4.0GHz vs 3.3GHz)
More modern manufacturing process (4nm vs 6nm)
Lower TDP (35W vs 45W)