Intel Xeon E5 2648L 's Advantages
Released 4 years and 4 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (70W vs 80W)
Xeon E5462 's Advantages
Higher specification of memory (3 vs 3)
Higher base frequency (2.8GHz vs 1.8GHz)