Intel Core i3 12100T 's Advantages
Lower TDP (35W vs 125W)
Intel Core i9 12900K 's Advantages
Better graphics card performance
Higher specification of memory (4800 vs 4800)
Newer PCIe version (5.0 vs 5)
Higher base frequency (32GHz vs 2.2GHz)
Larger L3 cache size (30MB vs 12MB)