I have 2 sticks of ddr2 dual channel mem. i read online that its better to put them in slots one and three which are the same color( 1,3 green 2,4 black) but the motherboard says to install dual channel in either 1 and 2 or 3 and 4. i have a http://xfxforce.com/en-us/products/motherboards/GeForce%20AMDseries/GeForce%208200.aspx