Intel Xeon E5 2666 v3 's Advantages
Higher base frequency (2.9GHz vs 2GHz)
Lower TDP (135W vs 205W)
Intel Xeon Gold 6330 's Advantages
Released 6 years and 5 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Larger L3 cache size (42MB vs 25MB)
More modern manufacturing process (10nm vs 22nm)