Intel Xeon E3 1265L v2 's Advantages
Lower TDP (45W vs 80W)
Intel Xeon E3 1275 v5 's Advantages
Released 3 years and 5 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (3.6GHz vs 2.5GHz)
More modern manufacturing process (14nm vs 22nm)