Intel Xeon E3 1278L v4 's Advantages
Released 4 years and 10 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 130W)
Intel Xeon W3670 's Advantages
Higher base frequency (3.2GHz vs 2GHz)
Larger L3 cache size (12MB vs 6MB)