I've been looking around and see a lot of inconsistencies about ram working well or not. My question is that I have three 4gb 10600U 09-10-B0 that I received from an old desktop computer (one was fried, the others were tested and run fine). I currently have two 4gb 12800U sticks in my setup. Which ones should I go with? Should I add 12gb to my computer and get rid of the first two sticks, or just keep the setup I have now and junk these new sticks I got? My motherboard is able to run both of these by the way.