Intel Xeon E5 2693 v3 's Advantages
Higher specification of memory (2133 vs 3)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1275 's Advantages
Released 110 years and 3 months late
Higher base frequency (3.4GHz vs 2.8GHz)
Lower TDP (95W vs 160W)