Intel Xeon E5 4640 v3 's Advantages
Released 3 years and 1 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (30MB vs 10MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 2407 's Advantages
Higher base frequency (2.2GHz vs 1.9GHz)
Lower TDP (80W vs 105W)