Xeon E6510 's Advantages
Higher specification of memory (1333 vs 3)
Intel Xeon E5 2650L 's Advantages
Released 2 years late
Newer PCIe version (3 vs 2)
Higher base frequency (1.8GHz vs 1.733GHz)
Larger L3 cache size (20MB vs 12MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (70W vs 105W)