Intel Xeon E5 4620 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (16MB vs 6MB)
Intel Xeon E3 1278L v4 's Advantages
Released 3 years and 1 months late
Higher specification of memory (1600 vs 3)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 130W)