Intel Core i9 12900HK 's Advantages
Released 7 years late
Higher specification of memory (5200 vs 1600)
Larger memory bandwidth (76.8GB/s vs 25.6GB/s)
Newer PCIe version (4.0 vs 2.0)
Higher base frequency (2.5GHz vs 2.2GHz)
Larger L3 cache size (24MB vs 3MB)
More modern manufacturing process (10nm vs 14nm)
Intel Core i5 5200U 's Advantages
Lower TDP (15W vs 45W)