Opteron 13KS EE 's Advantages
Lower TDP (50W vs 115W)
Intel Xeon E7 4809 v3 's Advantages
Released 6 years and 2 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)