Intel Xeon W3690 's Advantages
Higher base frequency (3.466GHz vs 3.1GHz)
Larger L3 cache size (12MB vs 10MB)
Lower TDP (130W vs 140W)
Intel Xeon E5 1607 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)