Xeon E6540 's Advantages
Higher specification of memory (1333 vs 3)
Lower TDP (105W vs 115W)
Intel Xeon E5 4650L 's Advantages
Released 2 years and 2 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.6GHz vs 2GHz)
Larger L3 cache size (20MB vs 18MB)
More modern manufacturing process (32nm vs 45nm)