Intel Xeon E5 1660 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Higher base frequency (3GHz vs 2.2GHz)
Larger L3 cache size (20MB vs 10MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 2407 's Advantages
Lower TDP (80W vs 140W)