Intel Xeon W3690 's Advantages
Higher base frequency (3.466GHz vs 2.4GHz)
Intel Xeon E5 2629 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (85W vs 130W)