Xeon E7 4820 's Advantages
Higher base frequency (2GHz vs 1.9GHz)
Lower TDP (105W vs 350W)
Intel Xeon Max 9480 's Advantages
Released 11 years and 9 months late
Higher specification of memory (4800 vs 1333)
Larger L3 cache size (112.5MB vs 18MB)
More modern manufacturing process (10nm vs 32nm)