Xeon E7 4820 's Advantages
Higher specification of memory (1333 vs 4)
Lower TDP (105W vs 205W)
Xeon Platinum 8280 's Advantages
Released 7 years and 8 months late
Higher base frequency (2.7GHz vs 2GHz)
Larger L3 cache size (38.5MB vs 18MB)
More modern manufacturing process (14nm vs 32nm)