Intel Xeon E5 2670 's Advantages
Larger L3 cache size (20MB vs 8.25MB)
Lower TDP (115W vs 140W)
Intel Xeon W 2133 's Advantages
Released 5 years and 5 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (3.6GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 32nm)