Intel Xeon E5 2640 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (1866 vs 1333)
Higher base frequency (2.6GHz vs 2.4GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (90W vs 130W)
Xeon E7 2870 's Advantages
Larger L3 cache size (30MB vs 20MB)