Xeon E6510 's Advantages
Higher specification of memory (1333 vs 3)
Intel Xeon E5 2630 's Advantages
Released 2 years late
Newer PCIe version (3 vs 2)
Higher base frequency (2.3GHz vs 1.733GHz)
Larger L3 cache size (15MB vs 12MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (95W vs 105W)