Intel Xeon X5667 's Advantages
Higher base frequency (3.066GHz vs 2.2GHz)
Lower TDP (95W vs 250W)
Xeon 6731E 's Advantages
Released 14 years and 3 months late
Higher specification of memory (DDR5-5600 vs DDR3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (96MB vs 12MB)
More modern manufacturing process (7nm vs 32nm)