Opteron 2220 's Advantages
Higher base frequency (2.8GHz vs 2.1GHz)
Lower TDP (95W vs 120W)
Intel Xeon w3 2423 's Advantages
Released 16 years late
Higher specification of memory (4400 vs 2)
Newer PCIe version (5 vs 1)
More modern manufacturing process (10nm vs 90nm)