Xeon EC3529 's Advantages
Higher specification of memory (1066 vs 3)
Lower TDP (65W vs 77W)
Intel Xeon E3 1225 v2 's Advantages
Released 2 years and 3 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.2GHz vs 2.133GHz)
More modern manufacturing process (22nm vs 45nm)