Intel Xeon E3 1278L v4 's Advantages
Released 5 years and 3 months late
Higher specification of memory (1600 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (47W vs 60W)
Intel Xeon L5640 's Advantages
Higher base frequency (2.266GHz vs 2GHz)
Larger L3 cache size (12MB vs 6MB)