Intel Xeon Gold 6421N 's Advantages
Released 3 years and 5 months late
Higher specification of memory (DDR5-4400 vs DDR4-3200)
Newer PCIe version (5 vs 4)
Lower TDP (185W vs 225W)
AMD EPYC 7642 's Advantages
Higher base frequency (2.4GHz vs 1.8GHz)
Larger L3 cache size (256MB vs 60MB)