Intel Xeon E3 1270 v5 's Advantages
Released 4 years and 6 months late
Higher base frequency (3.6GHz vs 3.4GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (80W vs 95W)
Intel Xeon E3 1275 's Advantages
Higher specification of memory (DDR3 vs DDR3)