Xeon EC5539 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.266GHz vs 1.9GHz)
Opteron 3320 EE 's Advantages
Released 2 years and 10 months late
Larger L3 cache size (8MB vs 4MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (25W vs 65W)