My motherboard is Abit Fatal1ty AN8-SLI and it says "DDR standard DDR400(PC3200)." Does that mean that I can't go over that? like to say DDR550 or something. Also do you get Dual Channel if i have x4 512 sticks? i wasnt sure so i went with x2 1GB sticks instead but i was just wondering, cause it says stick the RAM in the same colored DIMMs for Dual Channel. So if you put RAM in all of them is it dual channel as well? Thxs.