Intel Xeon E5 2630 's Advantages
Higher base frequency (2.3GHz vs 1.8GHz)
Lower TDP (95W vs 110W)
Intel Xeon E5 2675 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (40MB vs 15MB)
More modern manufacturing process (22nm vs 32nm)