Xeon EC5549 's Advantages
Lower TDP (85W vs 130W)
Intel Xeon E5 1680 v2 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3GHz vs 2.533GHz)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)