Xeon E 2278G 's Advantages
Higher base frequency (3.4GHz vs 2.2GHz)
Lower TDP (95W vs 205W)
Intel Xeon Gold 5520 's Advantages
Released 4 years and 7 months late
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (52.5MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)