Intel Xeon E5 2690 's Advantages
Lower TDP (135W vs 255W)
Intel Xeon W 3175X 's Advantages
Released 6 years and 10 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (3.1GHz vs 2.9GHz)
Larger L3 cache size (38.5MB vs 20MB)
More modern manufacturing process (14nm vs 32nm)