Intel Xeon E5 2643 's Advantages
Released 4 years and 11 months late
Newer PCIe version (3 vs 1)
Higher base frequency (3.3GHz vs 3GHz)
More modern manufacturing process (32nm vs 90nm)
Opteron 8222 SE 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (120W vs 130W)