My new macbook is on its way with 1 gb ram installed. I ordered a 1 gb stick from newegg so i could install it when the computer arrived for a total of 1.5 gbs. Is this a good idea even though it wont run in dual channel mode (will it run in dual channel mode?) or will it not make a difference really? I plan on buying a new 1 gb stick very soon anyways so it doesn't matter too much, just wondering. thanks.