Opteron 8216 HE (F3) 's Advantages
Higher specification of memory (667 vs 3)
Lower TDP (68W vs 130W)
Intel Xeon E5 2643 's Advantages
Released 5 years and 7 months late
Newer PCIe version (3 vs 1)
Higher base frequency (3.3GHz vs 2.4GHz)
More modern manufacturing process (32nm vs 90nm)