Intel Xeon D 1587 's Advantages
Released 4 years and 10 months late
Higher specification of memory (4 vs 3)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon E3 1220L 's Advantages
Higher base frequency (2.2GHz vs 1.7GHz)
Larger L3 cache size (3MB vs 1.5MB)
Lower TDP (20W vs 65W)