Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.5GHz)
Lower TDP (95W vs 270W)
Intel Xeon w7 3455 's Advantages
Released 16 years late
Higher specification of memory (4800 vs 2)
Newer PCIe version (5 vs 1)
More modern manufacturing process (10nm vs 90nm)