Intel Core i9 12900H 's Advantages
Released 2 years and 9 months late
Better graphics card performance
Higher specification of memory (LPDDR5-5200 vs DDR4-2666)
Larger memory bandwidth (76.8GB/s vs 41.8GB/s)
Newer PCIe version (4.0 vs 3.0)
Larger L3 cache size (24MB vs 12MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (35W vs 45W)
Intel Core i7 9750H 's Advantages
Higher base frequency (2.6GHz vs 2.5GHz)