AMD OpteronZS211800S6D20Engineering Sample CPU SIX CORE Socket F 1207. CPU is working at Six Core 2.1Ghz/6MB L3. It seems a Opteron 8425 engineering sample CPU.They're fully tested 100% working. We provide 14 days DOA warranty on this item.Shipping &Handling fees is free to North America by Post Airmail and it generally takes 7 work days to arrive its destination with tracking service. Pls email me on other areas or other shipping arrangment.