Intel Xeon E5 2640 v3 's Advantages
Larger L3 cache size (20MB vs 16MB)
Lower TDP (90W vs 95W)
Xeon E 2278G 's Advantages
Released 4 years and 8 months late
Higher specification of memory (2666 vs 1866)
Higher base frequency (3.4GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 22nm)