Intel Core i3 1215U 's Advantages
Lower TDP (15W vs 45W)
Intel Core i9 13900HK 's Advantages
Released 11 months late
Better graphics card performance
Higher specification of memory (6400 vs 5200)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Newer PCIe version (5.0 vs 4.0)
Higher base frequency (2.6GHz vs 1.2GHz)
Larger L3 cache size (24MB vs 10MB)