Opteron 4310 EE 's Advantages
Released 9 months late
Higher specification of memory (1600 vs 3)
Higher base frequency (2.2GHz vs 1.8GHz)
Lower TDP (35W vs 80W)
Intel Xeon E5 2603 's Advantages
Newer PCIe version (3 vs 2)
Larger L3 cache size (10MB vs 8MB)