Intel Xeon E5 2660 v2 's Advantages
Released 9 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.2GHz vs 1.9GHz)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Opteron 3320 EE 's Advantages
Lower TDP (25W vs 95W)