Intel Xeon D 1531 's Advantages
Released 2 years and 5 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (35W vs 80W)
Intel Xeon E3 1230 v3 's Advantages
Higher specification of memory (1600 vs 4)
Higher base frequency (3.3GHz vs 2.2GHz)
Larger L3 cache size (8MB vs 1.5MB)