Intel Xeon E3 1275 v2 's Advantages
Released 1 years and 1 months late
Higher base frequency (3.5GHz vs 1.866GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (77W vs 95W)
Xeon E7 4807 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 8MB)