Intel Core i5 9400T 's Advantages
Integrated graphics card
Higher base frequency (1.8GHz vs 1.6GHz)
Intel Core Ultra 5 135UL 's Advantages
Released 5 years late
Higher specification of memory (5600 vs 2666)
Larger memory bandwidth (89.6GB/s vs 41.6GB/s)
Newer PCIe version (4 vs 3.0)
Larger L3 cache size (12MB vs 9MB)
More modern manufacturing process (7nm vs 14nm)
Lower TDP (15W vs 35W)