Xeon E7 4820 's Advantages
Lower TDP (105W vs 200W)
AMD EPYC 9135 's Advantages
Released 13 years and 6 months late
Higher specification of memory (6000 vs 1333)
Higher base frequency (3.65GHz vs 2GHz)
Larger L3 cache size (64MB vs 18MB)
More modern manufacturing process (4nm vs 32nm)