Intel Xeon D 1581 's Advantages
Released 1 years and 5 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 140W)
Intel Xeon E5 1607 v3 's Advantages
Higher specification of memory (1866 vs 4)
Higher base frequency (3.1GHz vs 1.8GHz)
Larger L3 cache size (10MB vs 1.5MB)