Intel Xeon D 1520 's Advantages
Released 2 years and 10 months late
Higher specification of memory (4 vs 3)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E3 1265L v2 's Advantages
Higher base frequency (2.5GHz vs 2.2GHz)
Larger L3 cache size (8MB vs 1.5MB)