I asked a similar question earlier but now I am wondering if these 2 cards could be sli'd. I was planning on using the sc+ in the top slot and the slower one below it. I am assuming I would have to OC the slower card to match the sc+... So will it work to sli these? I already have the 06G-P4-4991-KR and wanted to get a faster card to put in the top slot + the sc+ is $50 cheaper than the 06G-P4-4991-KR on amazon lol