Intel Xeon E5 2693 v3 's Advantages
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.8GHz vs 2.5GHz)
More modern manufacturing process (22nm vs 45nm)
Xeon E5420 's Advantages
Released 106 years and 10 months late
Lower TDP (80W vs 160W)