Intel Xeon E3 1284L v4 's Advantages
Released 2 years late
Higher specification of memory (1866 vs 1600)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 80W)
Intel Xeon E3 1220 v3 's Advantages
Higher base frequency (3.1GHz vs 2.9GHz)
Larger L3 cache size (8MB vs 6MB)