Opteron 3320 EE 's Advantages
Higher base frequency (1.9GHz vs 1.6GHz)
Lower TDP (25W vs 85W)
Intel Xeon E5 2603 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (1600 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)