Intel Xeon E5640 's Advantages
Released 109 years and 2 months late
Lower TDP (80W vs 160W)
Intel Xeon E5 2693 v3 's Advantages
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.8GHz vs 2.666GHz)
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)