Opteron 13KS EE 's Advantages
Lower TDP (50W vs 140W)
Intel Xeon E5 1603 v3 's Advantages
Released 5 years and 5 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (2.8GHz vs 2GHz)
Larger L3 cache size (10MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)