I just used the code and ordered me one. My odd/half multi on my 4000+ was not working out for me. Memory running at 700 insted of 800 no good. I knew that I needed a 8,10,12,14, or 16 multi to have my ram run at the right speed. Thought I could lower my multi to 10 and overclock. That doesnet work. I put the multi at 10 and it crashes. The Black one will give me the multi(s) I need.