Opteron 6348 's Advantages
Higher base frequency (2.8GHz vs 2.55GHz)
Lower TDP (115W vs 400W)
AMD EPYC 9684X 's Advantages
Released 10 years and 7 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 2)
Larger L3 cache size (1152MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)