Xeon E6510 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (12MB vs 6MB)
Intel Xeon E3 1258L v4 's Advantages
Released 5 years and 3 months late
Newer PCIe version (3 vs 2)
Higher base frequency (1.8GHz vs 1.733GHz)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (47W vs 105W)