Intel Xeon E7 8893 v3 's Advantages
Higher base frequency (3.2GHz vs 1.8GHz)
Lower TDP (140W vs 185W)
Intel Xeon Gold 6421N 's Advantages
Released 7 years and 7 months late
Higher specification of memory (4400 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (60MB vs 45MB)
More modern manufacturing process (10nm vs 22nm)