Intel Xeon E5 2660 's Advantages
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
Lower TDP (95W vs 99W)
Opteron 6338P 's Advantages
Released 1 years and 10 months late
Higher specification of memory (1600 vs 3)
Higher base frequency (2.3GHz vs 2.2GHz)