Intel Core i5 9400F 's Advantages
Higher base frequency (2.9GHz vs 1.4GHz)
Intel Core Ultra 9 285T 's Advantages
Released 6 years late
Integrated graphics card
Higher specification of memory (6400 vs 2666)
Larger memory bandwidth (102.4GB/s vs 41.6GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (36MB vs 9MB)
More modern manufacturing process (3nm vs 14nm)
Lower TDP (35W vs 65W)