Xeon E 2278GEL 's Advantages
Lower TDP (35W vs 205W)
Intel Xeon Gold 5420 's Advantages
Released 3 years and 7 months late
Higher specification of memory (DDR5-4400 vs DDR4-2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (52.5MB vs 16MB)
More modern manufacturing process (10nm vs 14nm)