Hello, I am posting for the first time here. So please let me know if I am doing it in wrong forum. I have and processor with 4gb corsair 1333 c9 ram stick. Now I want to upgrade it to 8gb by adding another stick. But in market I can find only corsair 1600 c11, which use the same voltage rating as the old stick (that much I gather from internet). Now I understand that if I mix them they may work with 1333 clock speed, if work at all, which is fine by me. I am looking for suggestions whether I should try it or any alternative. Thanks in advance.