Hi i have a q? about duel channel ram. If i have four ram slots and i fill the first pair with 2X512 to give it 1024mb and the secound pair with 2X256 to give a total of 1536 do i still get the benifite from the duel channel. I know that for duel channel to work i need two of the same ram eg 2X256 but do i need all four to be of the same type or does it only matter for the pairs? Does that make sense, if so can some one plz answer.