Xeon EC3529 's Advantages
Higher specification of memory (1066 vs 3)
Lower TDP (65W vs 130W)
Intel Xeon E5 2687W v2 's Advantages
Released 3 years and 7 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 2.133GHz)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)