Intel Xeon X5687 's Advantages
Higher base frequency (3.6GHz vs 2.1GHz)
Larger L3 cache size (12MB vs 1.5MB)
Intel Xeon D 1567 's Advantages
Released 5 years late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 130W)