Intel Xeon E3 1275 v3 's Advantages
Higher base frequency (3.5GHz vs 3.4GHz)
Larger L3 cache size (8MB vs 6MB)
Intel Xeon E3 1285L v4 's Advantages
Released 2 years late
Higher specification of memory (1866 vs 4)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 84W)