Intel Xeon E3 1265L v4 's Advantages
Released 9 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (35W vs 105W)
Intel Xeon E5 2660 v3 's Advantages
Higher specification of memory (2133 vs 1866)
Higher base frequency (2.6GHz vs 2.3GHz)
Larger L3 cache size (25MB vs 6MB)