Intel Xeon E5-2687W v2 's Advantages
Released 5 years and 6 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 2.5GHz)
More modern manufacturing process (22nm vs 45nm)
Intel Xeon L5420 's Advantages
Higher specification of memory (3 vs 3)
Lower TDP (50W vs 130W)