Well I don't know the answer to the Duron question since I live in Canada and we ususally get our shipments a little later than the US but I would definitely get a name brand ram preferably of the Cas2 variety especially if you are planning to overclock substantially. Using a cheap generic brand is just asking for problems. I know it's alot more money but if you are using a t-bird you can probably afford a little more for quality Ram. Otherwise buy a duron and good ram. You will thank yourself later.