Intel Xeon E5 4640 v3 's Advantages
Lower TDP (105W vs 270W)
Intel Xeon Gold 6538N 's Advantages
Released 8 years and 6 months late
Higher specification of memory (5200 vs 1866)
Newer PCIe version (5 vs 3)
Higher base frequency (2.1GHz vs 1.9GHz)
Larger L3 cache size (60MB vs 30MB)
More modern manufacturing process (10nm vs 22nm)