I have https://www.asus.com/ROG-Republic-Of-Gamers/RAMPAGE_IV_FORMULA/specifications/ mobo.Currently i have 12gb ram 3x4gb. One dimm is broken, before had 16gb. All is running in triple channel.I am going to buy additional 2x8gb (other type). Can i run 2x4gb + 2x8gb in duall channel or smth on this x79 mobo?