Intel Xeon E5 2603 v3 's Advantages
Higher specification of memory (1600 vs 4)
Larger L3 cache size (15MB vs 1.5MB)
Intel Xeon D 1587 's Advantages
Released 1 years and 5 months late
Higher base frequency (1.7GHz vs 1.6GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 85W)