Opteron 4310 EE 's Advantages
Released 9 months late
Higher specification of memory (1600 vs 3)
Lower TDP (35W vs 130W)
Intel Xeon E5 1660 's Advantages
Newer PCIe version (3 vs 2)
Higher base frequency (3.3GHz vs 2.2GHz)
Larger L3 cache size (15MB vs 8MB)