Intel Xeon E3 1265L v4 's Advantages
Released 6 years and 3 months late
Higher specification of memory (1866 vs 1066)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (35W vs 80W)
Xeon E5540 's Advantages
Higher base frequency (2.533GHz vs 2.3GHz)
Larger L3 cache size (8MB vs 6MB)