I just ordered an Athlon X2 4400+ and I am still debating on what memory to get with it. Right now I will run some cheap pc3200, 512mb until I can research enough to find out what memory goes best with the X2. My biggest question is whether to go with pc3200 again, or upgrade to something like pc3500 or possibly pc4000. Is there a performance difference at all? I do plan to overclock, so that is something to take into consideration. In theory, faster RAM means an easier-overclocked processor. Does anyone have some input on this?