I have a G. Skill 6 gb tripple channel kit - ddr3 1600mhz 9-9-9-24 voltage 1.5-1.65. I was just wondering if I got another 2 gb stick with same timing and simular voltage if the ram would work as dual dual channel. The reason I'm asking this is because when i built my new pc months ago I didnt know anything about the AM3 platform or DDR3 memory and unknowingly purchased the tripple channel kit assuming it was compatible.
There is not much performance difference between single channel and dual channel anyway. So either leave the three in or if you don't need the 6 GB, which you most likely don't, then just take out one stick. I don't think its worth buying a single 2GB module considering you won't get much if any of a performance increase.