Intel Xeon E5 2640 v3 's Advantages
Released 4 years and 1 months late
Higher specification of memory (DDR4-1866 vs DDR3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (90W vs 130W)
Intel Xeon W3670 's Advantages
Higher base frequency (3.2GHz vs 2.6GHz)