Ok so I want to have 1 4k monitor for gaming and 1 secondary one (1080p)for looking things up or watching the chat during streams. So the question is will I need 1 980ti, 2 980s or 2 980tis. Personally I would like to use a single 980ti, but if it won't have enough horse power that it will need 2 980s, unless of course it needs so much power that it needs 2 980tis. Thanks