Intel Xeon E5 2420 v2 's Advantages
Released 3 years and 6 months late
Higher base frequency (2.2GHz vs 1.866GHz)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (80W vs 95W)
Xeon L7555 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 15MB)