Intel Xeon E5 4655 v3 's Advantages
Released 4 years and 2 months late
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
Higher base frequency (3.4GHz vs 2.9GHz)
Lower TDP (95W vs 135W)