Xeon L7555 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1333 vs 667)
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Lower TDP (95W vs 120W)
Opteron 8220 SE (F2) 's Advantages
Higher base frequency (2.8GHz vs 1.866GHz)