I really need 16gb RAM for when i get my gaming pc for graphic video and photographic editing on heavy software like photoshop(and gaming), so I need to know when I get myh gaming pc whether to buy the 16gb straight away or buy 8gb and then buy another 8gb later (this would be more convenient money wise but it doesnt make a big difference. I would obviously be buying the same ram again, would this affect the pc, would i be able to buy two different types of ram and would it work (i am not planning on doing this but i would like to know). However I don't want any problems so I need the chance of any issues limited as much as possible and i would prefer to have some spare ram slots on my motherboard (asus maximus 6 hero(c2 version). If i do buy the 16gb should i buy it 2 sticks of 8 and have 2 slots left (what i want-but i dont know if this is a good idea or not) have 4 sticks of 4gb which i think makes it faster but uses all slots or start with the 8gb which is 2 sticks of 4 and buy the same package again to get 4 sticks of 4 gb ram? Please help I have no idea and i am building this pc from scratch so i really dont want any problems, many thanks.