Opteron 8218 (F2) 's Advantages
Higher specification of memory (667 vs 3)
Higher base frequency (2.6GHz vs 2.266GHz)
Intel Xeon L5640 's Advantages
Released 3 years and 7 months late
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Lower TDP (60W vs 95W)