Intel Xeon E5 2667 v3 Advantages
Released 6 years and 6 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.2GHz vs 2.5GHz)
More modern manufacturing process (22nm vs 45nm)
Xeon L5420 Advantages
Lower TDP (50W vs 135W)