Intel Xeon E3 1275 v3 's Advantages
Higher base frequency (3.5GHz vs 2GHz)
Intel Xeon E3 1505L v5 's Advantages
Released 2 years and 4 months late
Higher specification of memory (2133 vs 4)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (25W vs 84W)