Sorry if this has been asked, but I didn't see a response for the 2009's, maybe it is the same answer as the 2008? Can I put non-ecc ram in the 2009 MP? I just bought a recertified unit from apple, but it only comes with 3GB of ram, I want to get closer to 6GB. So I am trying to figure out what is the cheapest route. I am currently looking at a tripple channel kit on new egg by crucial that is non ecc for $165. or would it be better to add a single 2GB module which is much less and upgrade to a tripple 6GB ECC kit later?