So I bought 2x4GB Ram sticks, then wanted to upgrade so I bought 2 more with the exact same specs- Speed, Size and CAS latency. Afterward, my computer started freezing when playing high graphic video games. I took out the SPD and now it works fine,HOWEVER, I didn't have Dual channel set up properly b/c I thought that same colored slots were of the same channel but they are not. Will I be able to run them together if Dual channel is set up properly? SPD on one channel and XMP on the other. I'll probably just test it out. But would like to know hear some suggestions. Thanks.