Intel Xeon E5 2630 v2 's Advantages
Higher base frequency (2.6GHz vs 1.7GHz)
Lower TDP (80W vs 105W)
Intel Xeon E5 4648 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-1866 vs DDR3)
Larger L3 cache size (30MB vs 15MB)