Intel Core i7 12700T 's Advantages
Released 3 years late
Integrated graphics card
Higher specification of memory (4800 vs 2666)
Larger memory bandwidth (76.8GB/s vs 41.6GB/s)
Newer PCIe version (5 vs 3.0)
Larger L3 cache size (25MB vs 9MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (35W vs 65W)
Intel Core i5 9400F 's Advantages
Higher base frequency (2.9GHz vs 1.4GHz)