Intel Xeon E3 1280 v2 's Advantages
Higher base frequency (3.6GHz vs 3.3GHz)
Lower TDP (69W vs 80W)
Intel Xeon E3 1225 v5 's Advantages
Released 3 years and 5 months late
Higher specification of memory (2133 vs 3)
More modern manufacturing process (14nm vs 22nm)