AMD Ryzen 7 7840H's Advantages
Better graphics card performance
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (3.8GHz vs 3.2GHz)
More modern manufacturing process (4nm vs 6nm)
Lower TDP (35W vs 35W)
AMD Ryzen 7 7735HS's Advantages
Higher specification of memory (LPDDR5-6400 vs DDR5-5600)
Newer PCIe version (4.0 vs 4)