Intel Xeon X5687 's Advantages
Higher base frequency (3.6GHz vs 2.5GHz)
Lower TDP (130W vs 235W)
Xeon 6706P B 's Advantages
Released 14 years late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (160MB vs 12MB)
More modern manufacturing process (5nm vs 32nm)