Xeon E5540 's Advantages
Released 2 years and 7 months late
Higher specification of memory (1066 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (2.533GHz vs 2.4GHz)
More modern manufacturing process (45nm vs 90nm)
Opteron 2216 HE (F3) 's Advantages
Lower TDP (68W vs 80W)