Opteron 6274 's Advantages
Released 2 years and 7 months late
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (16MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)
Opteron 13KS EE 's Advantages
Higher specification of memory (1333 vs 3)
Lower TDP (50W vs 115W)