Opteron 13KS EE 's Advantages
Higher base frequency (2GHz vs 1.8GHz)
Lower TDP (50W vs 75W)
Intel Xeon E5 2648L v3 's Advantages
Released 5 years and 5 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (30MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)