Intel Xeon D 1520 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 115W)
Intel Xeon E7 8880L v3 's Advantages
Higher specification of memory (1866 vs 4)
Larger L3 cache size (45MB vs 1.5MB)