Xeon E7520 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1333 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (1.866GHz vs 1.8GHz)
More modern manufacturing process (45nm vs 90nm)
Opteron 2210 HE (F3) 's Advantages
Lower TDP (68W vs 95W)