I have a 4x4gb corsair vengeance cmz16gx3m4a1600c9 kit installed in my setup but I ran memtest and two of the sticks are dead. I was wondering if I can buy 2 8gb sticks and throw that in there with them, if I need to throw the whole 4 x 4gb kit out since 2 of them are kaput, or if I need to do something else that I am currently unaware of. Thanks in advance!