I currently have these G. Skill Ripjaws 2x8 1866 RAM installed http://www.newegg.com/Product/Product.aspx?Item=N82E16820231528 in my computer. Recently a friend of mine no longer had a need for his G. Skill Ripjaws 2x4 1866 RAM http://www.newegg.com/Product/Product.aspx?Item=N82E16820231455 and gave them to me to sell or use, or whatever. Seeing as I'm too lazy to try and sell them, I figured I'd use them. I could just stick them in and see what happens, but, I'm a very paranoid person, thanks mom. So, I figured I would ask you guys first. My 2x8 sticks are dual channel in slots 1 and 3. So would it be okay to use the 2x4 in slots 2 and 4? In my mind it would be fine since pretty much everything about the two RAMs is pretty much the same. But, you guys most likely know better. If they are fine to use would I have to change any timings, or voltages, etc? Or does it not matter since they are two separate channels?