Intel Xeon E5 2660 v2 's Advantages
Higher base frequency (2.2GHz vs 1.7GHz)
Lower TDP (95W vs 105W)
Intel Xeon E5 4648 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (30MB vs 25MB)