Xeon E5540 's Advantages
Higher base frequency (2.533GHz vs 2.5GHz)
Lower TDP (80W vs 225W)
Intel Xeon w7 2495X 's Advantages
Released 13 years and 11 months late
Higher specification of memory (4800 vs 1066)
Newer PCIe version (5 vs 2)
Larger L3 cache size (45MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)