le sigh,soooooooo much wrong in this post(you should know better tbh)
@OP:the 448 is basically a 570 to intents and purposes,and there are ways to get it to wotk(even on no sli boards)but tbh,its probably not worth the effort to do,not only do you have to deal with games that do not like sli,you also have to use modded/old drivers which can cause headaches on their own,and also you may get new bugs/glitches because the cards do not match(which means your options for getting help are minuscule),It can be done easy enough,but tbh its just not worth the potential hassle