Xeon E7 4870 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Lower TDP (130W vs 180W)
AMD EPYC 7551 's Advantages
Released 6 years and 2 months late
Higher specification of memory (2666 vs 1333)
Larger L3 cache size (64MB vs 30MB)
More modern manufacturing process (14nm vs 32nm)