Xeon E7 2820 's Advantages
Lower TDP (105W vs 270W)
Intel Xeon Platinum 8380 's Advantages
Released 10 years late
Higher specification of memory (3200 vs 1333)
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (60MB vs 18MB)
More modern manufacturing process (10nm vs 32nm)