When I first made my build, I thought 4gb of ram would be enough however I've now come to the realization that 8gb is what I really need. I already have 2 sticks of 2gb ram and am considering buying 2 more sticks of the same kind. However, my motherboard only supports dual channel. Will there be a significant performance decrease or any other issue if I choose to add 2 more sticks. The ram is G. Skill Rip Jaw X @ 1600mhz. My mobo is a Biostar ta 970.