Intel Core i5 1230U 's Advantages
Lower TDP (9W vs 35W)
Intel Core i9 12900H 's Advantages
Better graphics card performance
Higher specification of memory (LPDDR5-5200 vs LPDDR5-5200)
Higher base frequency (2.5GHz vs 1.0GHz)
Larger L3 cache size (24MB vs 12MB)