So I'm wanting to upgrade to at least 8gb of ram from 4gb. My motherboard is an MSI P67A - G45 v2 and I currently have Ripjaws ddr3 1600 2x2 gb ram sticks. I want to get a 4 gb card of the same brand and speed but I hear having 3 cards may not work. I don't mind loosing the extra speed from dual band but it would be unfortunate if it didn't work and I would be forced to order the other 4gb card immediately. The reason why I don't want to get 2x4 now is because im low on cash at the moment. I also don't want to get another 2x2 as that would be too limiting. Is is worht ordering the 4gb card now?