Xeon E5540 's Advantages
Higher base frequency (2.533GHz vs 1.8GHz)
Xeon D 2752TER 's Advantages
Released 12 years and 11 months late
Higher specification of memory (2667 vs 1066)
Newer PCIe version (4 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (10nm vs 45nm)
Lower TDP (77W vs 80W)