Intel Core i3 8100 's Advantages
Integrated graphics card
Higher base frequency (3.6GHz vs 3.2GHz)
Lower TDP (65W vs 125W)
Intel Core i9 14900KF 's Advantages
Released 6 years late
Higher specification of memory (DDR5-5600 vs DDR4-2400)
Larger memory bandwidth (89.6GB/s vs 37.5GB/s)
Newer PCIe version (5.0 vs 3.0)
Larger L3 cache size (36MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)