Intel Xeon E5 2648L 's Advantages
Lower TDP (70W vs 90W)
Intel Xeon E5 2640 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.6GHz vs 1.8GHz)
More modern manufacturing process (22nm vs 32nm)