i have http://www.newegg.com/Product/Product.aspx?Item=N82E16820145033 i want to buy two 2bg sticks for a total of 6gb. I want to know if get 4gb of 800 ram and oc it to 1066 http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184 will it work with the ram i have now, or do i have to buy all the same chips?