Intel Xeon D 1520 's Advantages
Released 1 years and 6 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 80W)
Intel Xeon E5 2630 v2 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (2.6GHz vs 2.2GHz)
Larger L3 cache size (15MB vs 1.5MB)