Opteron 13KS EE 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2GHz vs 1.9GHz)
Lower TDP (50W vs 95W)
Intel Xeon E5 2420 's Advantages
Released 3 years and 1 months late
Larger L3 cache size (15MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)