Intel Xeon E5 2663 v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (2.8GHz vs 2GHz)
Larger L3 cache size (25MB vs 18MB)
More modern manufacturing process (22nm vs 45nm)