Intel Xeon E3 1220L 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
Lower TDP (20W vs 47W)
Intel Xeon E3 1278L v4 's Advantages
Released 4 years and 2 months late
Higher specification of memory (1600 vs 3)
Larger L3 cache size (6MB vs 3MB)
More modern manufacturing process (14nm vs 32nm)