The latest AMD processor is the Athlon 64 FX-74, which is dual core, runs at 3 GHz and has 1 MB of L2 cache for each core. Since its the best and latest model, its probaly a bit expensive so theres always the Athlon 64 X2 which is mostly the same except that it maxs out at 2.8 GHz and has a few features missing (you probaly won't need them anyway).