Intel Xeon E5607 's Advantages
Higher base frequency (2.266GHz vs 2.2GHz)
Lower TDP (80W vs 250W)
Xeon 6731E 's Advantages
Released 13 years and 4 months late
Higher specification of memory (DDR5-5600 vs DDR3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (96MB vs 8MB)
More modern manufacturing process (7nm vs 32nm)