Opteron 6284 SE 's Advantages
Higher base frequency (2.7GHz vs 2.1GHz)
Lower TDP (140W vs 390W)
AMD EPYC 9845 's Advantages
Released 12 years and 5 months late
Higher specification of memory (6000 vs 1600)
Newer PCIe version (5 vs 2)
Larger L3 cache size (320MB vs 8MB)
More modern manufacturing process (3nm vs 32nm)