Intel Xeon D 1520 's Advantages
Released 10 months late
Higher base frequency (2.2GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Intel Xeon E3 1240L v3 's Advantages
Higher specification of memory (1600 vs 4)
Larger L3 cache size (8MB vs 1.5MB)
Lower TDP (25W vs 45W)