I can get 2 single 256M modules for $33.00 less than the Dual kit. Is there any reason I would want the Dual Channel matched pair? If I do buy the two, I will buy them at the exact same time. You pay a premium for the matched pair to guarantee success but, in reality, is there ever a problem buying them individually. I have read other posts of others using quite different RAM on 865/875 motherboards so I doubt there is. Just want to be sure.