Opteron 6276 's Advantages
Lower TDP (115W vs 120W)
AMD EPYC 4484PX 's Advantages
Released 12 years and 6 months late
Higher specification of memory (DDR5-5200 vs DDR3)
Newer PCIe version (5 vs 2)
Higher base frequency (4.4GHz vs 2.3GHz)
Larger L3 cache size (128MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)