Intel Core i5 12400 's Advantages
Lower TDP (65W vs 170W)
AMD Ryzen 9 7900X 's Advantages
Released 8 months late
Higher specification of memory (DDR5-5200 vs DDR5-4800)
Larger memory bandwidth (83.2GB/s vs 76.8GB/s)
Higher base frequency (4.7GHz vs 2.5GHz)
Larger L3 cache size (64MB vs 18MB)