Intel Xeon W 2125 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (4GHz vs 2.2GHz)
Larger L3 cache size (8.25MB vs 1.5MB)
Intel Xeon D 1531 's Advantages
Lower TDP (35W vs 120W)