Intel Xeon W 2133 's Advantages
Released 6 years and 6 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 3.466GHz)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon W3690 's Advantages
Larger L3 cache size (12MB vs 8.25MB)
Lower TDP (130W vs 140W)