Intel Xeon Gold 6421N 's Advantages
Released 10 years and 10 months late
Higher specification of memory (4400 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (60MB vs 20MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon E5 2690 's Advantages
Higher base frequency (2.9GHz vs 1.8GHz)
Lower TDP (135W vs 185W)