I put a single stick of corsair value ram (1 gig ) in my system ( gigabyte mobo, amd 3700 ) and when I boot it says my ram is running in single channel. Should I have bought 2 sticks of 512 mb instead? Do you think I'll see a big difference by adding another 1 gig stick to bring it to dual channel? I do a little gaming and a lot of internet surfing.