Opteron 1352 (B2) 's Advantages
Higher specification of memory (800 vs 3)
Higher base frequency (2.1GHz vs 1.8GHz)
Intel Xeon E5 2603 's Advantages
Released 3 years and 9 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (10MB vs 2MB)
More modern manufacturing process (32nm vs 65nm)
Lower TDP (80W vs 95W)