Intel Xeon X5677 's Advantages
Higher base frequency (3.466GHz vs 3GHz)
Larger L3 cache size (12MB vs 10MB)
Intel Xeon E5 2623 v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (105W vs 130W)