Intel Core i9 13900H Advantages
Higher base frequency (2.6GHz vs 1.4GHz)
Intel Core Ultra 7 155H Advantages
Released 11 months late
Better graphics card performance
Higher specification of memory (LPDDR5-7467 vs LPDDR5-6400)
Larger memory bandwidth (120GB/s vs 89.6GB/s)
More modern manufacturing process (7nm vs 10nm)
Lower TDP (20W vs 35W)