I currently have a single GTX 560 2g and i want to do SLI with it so i can run games smoothly through the rest of my highschool career and i wanted to know does the card have to be exactly the same? I currently have a Nvidia one no twinfroster or asi just plan nvidia can i sli with one that isnt? if not where can i buy one i cant find them anywhere?
You need the same GPU (as in another GTX 560, not GTX 560 Ti or GTX 550, you get it), and it's recommended that amount of memory would be the same (even though it works without it being the same, the extra memory is wasted that way, the card with more memory starts acting as if it had same amount of memory as the lesser one).
The brand and specific model (like twin frozr) does not matter.