Intel Xeon E5 2678 v3 's Advantages
Released 2 years and 8 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (2.5GHz vs 2.4GHz)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 4640 's Advantages
Lower TDP (95W vs 120W)