Intel Core i5 14400 's Advantages
Released 5 years and 3 months late
Integrated graphics card
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5.0 vs 3.0)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (65W vs 165W)
Intel Core i9 9940X 's Advantages
Larger memory bandwidth (85GB/s vs 76.8GB/s)
Higher base frequency (3.3GHz vs 2.5GHz)