okokok... So my new computer is only running on 512MB DDR2 4200 right now, but I just bought another stick of 512MB DDR2 4200 from NewEgg. My current setup is running in dual channel, but if I throw in the 512 stick in one of the other slots (I have 2 banks of 2 = 4 dimm slots) is that going to kill the dual channel of my 256x2? Also, if I decide to buy another stick to run in dual channel, does it have to be the same size or could I get say a 256MB, or 1GB stick to run in dual channel with my 512, given that they are the same speed,etc? I'm confusing myself here. How much more efficient is dual channel anyways? Should I be sweatin' it if I lose my dual channel for a little while? I've heard some people say it's only 2-5% difference, and others say its 15-30% difference.
Any help would be appreciated.