Intel Xeon W 3175X 's Advantages
Released 8 years and 10 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.1GHz vs 2.8GHz)
Larger L3 cache size (38.5MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)
Intel Xeon W3530 's Advantages
Lower TDP (130W vs 255W)