Intel Xeon E3 1225 v5 's Advantages
Released 6 years and 2 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (80W vs 130W)
Xeon W5590 's Advantages
Higher base frequency (3.333GHz vs 3.3GHz)