Hello, guys! I want to upgrade my laptop memory by adding 4GB to the existing 4GB ( PC3-12800 ) The question is, what should I choose, dual kit, or single. In the first option, I'd have to replace the existing stick with the new kit, in the second one I just add it, but I can't buy the same producer, because it is not available here in my country. And I wanted to know how much memory and what is the maximum ram frequency my motherboard can take. (I did not find anything related to my mobo on google) This is my validation from CPU-Z : http://valid.x86.fr/6etmr1