Intel Xeon E3 1125C 's Advantages
Lower TDP (40W vs 120W)
Intel Xeon E5 4660 v3 's Advantages
Released 3 years and 1 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (35MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)