Opteron is the AMD processor targeted to the server market. The first Opteron processors were based on AMD64 architecture (a.k.a. x86-64 or “hammer”), the same one used by other CPUs from AMD, like Athlon 64, Athlon 64 FX, Athlon 64 X2, Turion 64 and Sempron (socket 462 Sempron models aren’t based on this architecture, however). Most recent Opteron processors are based on the new AMD K10 microarchitecture. In this tutorial we will present Opterons main features and also several tables listing all models release