Intel Core i3 9100 's Advantages
Lower TDP (65W vs 125W)
Intel Core Ultra 9 285K 's Advantages
Released 5 years and 6 months late
Better graphics card performance
Higher specification of memory (6400 vs 2400)
Larger memory bandwidth (102.4GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 3.0)
Higher base frequency (3.7GHz vs 3.6GHz)
Larger L3 cache size (36MB vs 6MB)
More modern manufacturing process (3nm vs 14nm)