Opteron 6278 's Advantages
Lower TDP (115W vs 240W)
Xeon w7 2565X 's Advantages
Released 12 years and 3 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 2)
Higher base frequency (3.2GHz vs 2.4GHz)
Larger L3 cache size (37.5MB vs 8MB)
More modern manufacturing process (10nm vs 32nm)