Opteron 6348 's Advantages
Higher base frequency (2.8GHz vs 2.2GHz)
Lower TDP (115W vs 200W)
EPYC 7552 's Advantages
Released 6 years and 9 months late
Higher specification of memory (3200 vs 1866)
Newer PCIe version (4 vs 2)
Larger L3 cache size (192MB vs 8MB)
More modern manufacturing process (7nm vs 32nm)