I would really appreciate some input here. I am building atleast two machines, one as a server, one as a UTM (think security onion) my exact needs are impossible to know atm and I want to leave room to grow so I am trying to leave as much flexibility as I can. I plan on building atleast one of them off of an ASRock C2750D4I so this is what I will be buying first and will be testing some network security monitoring with it at times, and at other times using it as vm server. This is my first server build. This board is supposed to hold up to 64GB of ECC ram but I cant find any examples of anyone actually doing it, the QVL list is kind of sparse and I have seen some people have had problems with some of the ram on the list (i dont know if they knew what they were doing) and there are many reports of ram not on the list working fine. I'm running in circles with my research and don't have much information to make a decision. So maybe you can help me out. http://www.asrockrack.com/general/productdetail.asp?Model=C2750D4I#Memory QVL Only 4 dimms so I need 16GB sticks if I want to get to 64 1. Is it better to buy 64 gigs now so I know they will all match? Or can I buy 16 or 32 and just add on later. If for any reason I think 64 gigs is overkill for my server I can just use the extra ram on a similar board I would be using (will be building atleast one server and a UTM for network security monitoring) 2. Is there any chance that 2 16GB sticks of ram that work on this board will not work when 4 are used to get to 64GB? 3. I know its been asked before but for this cpu/build 1333 or 1600 ECC I like the idea of an inexpensive mini itx server array with same or similar machines that are well suited for different tasks, seems easier to manage. But if you see anything wrong with what im doing feel free to let me know. Thanks in advance.