Intel Xeon E5 2667 's Advantages
Released 2 years late
Newer PCIe version (3 vs 2)
Higher base frequency (2.9GHz vs 1.733GHz)
Larger L3 cache size (15MB vs 12MB)
More modern manufacturing process (32nm vs 45nm)
Xeon E6510 's Advantages
Higher specification of memory (1333 vs 3)
Lower TDP (105W vs 130W)