Opteron 6366 HE 's Advantages
Higher specification of memory (1866 vs 3)
Lower TDP (85W vs 95W)
Intel Xeon E5 2660 v2 's Advantages
Released 10 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.2GHz vs 1.8GHz)
Larger L3 cache size (25MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)