Hey guys, i have a xfx 780i motherboard and i recently just purchase a new pairs of RAM the Corsair CM2X2048-6400 (2X2GB) so i can make an upgrade to my computer. in the computer i already have a Pairs of RAM installed, the CORSAIR CM2x1024-6400 (2X1GB). so in my thinking is that its will give me a total of 6GB of RAM? Correct?? but when i look at the spec of my computer under properties on the My computer icon. Its say i only have 2.75GB of RAM. i used Belarc's System and its say i have 4 RAM sticks installed. 2 2048 and 2 1024. please help me i dont know why its not showing the right number.