Intel Xeon E5 2643 's Advantages
Released 5 years and 7 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (3 vs 1)
Higher base frequency (3.3GHz vs 2.4GHz)
More modern manufacturing process (32nm vs 90nm)
Opteron 2216 HE (F3) 's Advantages
Lower TDP (68W vs 130W)