Xeon LC5528 's Advantages
Higher base frequency (2.133GHz vs 1.8GHz)
Lower TDP (60W vs 185W)
Intel Xeon Gold 6421N 's Advantages
Released 12 years and 11 months late
Higher specification of memory (4400 vs 1066)
Newer PCIe version (5 vs 2)
Larger L3 cache size (60MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)