Opteron 8218 (F2) 's Advantages
Higher specification of memory (667 vs 3)
Higher base frequency (2.6GHz vs 1.8GHz)
Intel Xeon E5 2603 's Advantages
Released 5 years and 7 months late
Newer PCIe version (3 vs 1)
More modern manufacturing process (32nm vs 90nm)
Lower TDP (80W vs 95W)