Intel Xeon E5 2648L v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (30MB vs 18MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (75W vs 105W)
Xeon E6540 's Advantages
Higher base frequency (2GHz vs 1.8GHz)