Xeon E6540 's Advantages
Larger L3 cache size (18MB vs 8MB)
Intel Xeon E3 1240 v5 's Advantages
Released 5 years and 7 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2GHz)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (80W vs 105W)