Opteron 13KS EE 's Advantages
Lower TDP (50W vs 80W)
Intel Xeon E3 1275 v5 's Advantages
Released 6 years and 6 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2GHz)
Larger L3 cache size (8MB vs 6MB)
More modern manufacturing process (14nm vs 45nm)