Intel Core i5 13400T 's Advantages
Lower TDP (35W vs 65W)
Intel Core i9 13900 's Advantages
Better graphics card performance
Higher specification of memory (5600 vs 4800)
Larger memory bandwidth (89.6GB/s vs 76.8GB/s)
Higher base frequency (2.0GHz vs 1.3GHz)
Larger L3 cache size (36MB vs 20MB)