Opteron 8220 SE (F2) 's Advantages
Higher base frequency (2.8GHz vs 2.2GHz)
Lower TDP (120W vs 250W)
Xeon 6731E 's Advantages
Released 17 years and 10 months late
Higher specification of memory (5600 vs 667)
Newer PCIe version (5 vs 1)
More modern manufacturing process (5nm vs 90nm)